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Best PracticeIntervention Sroczynski G et al (2010) Long-term effectiveness and cost-effectiveness of antiviral treatment in hepatitis C Journal of Viral Hepatitis 17(1)34-50
Date of Review March 23 2015
Reviewer(s) Christine Hu
Part A
Category Basic Science Clinical Science Public HealthEpidemiology
Social Science Programmatic Review
Best PracticeIntervention Focus Hepatitis C Hepatitis CHIV Other
Level Group Individual Other
Target Population HCV patients
Setting Health care settingClinic Home Other
Country of Origin Australia
Language English French Other
Part B
YES NO NA COMMENTS
Is the best practiceintervention a meta-analysis or primary research
Systematic review to assess the long-term effectiveness and cost-effectiveness of hepatitis C screening in different populations
Has the datainformation been used for decision-making (eg program funding developments policies treatment guidelines defining research priorities and funding)
Findings were not used for decision-making
Do the methodologyresults described allow the reviewer(s) to assess the generalizability of the results
Results cannot be generalized given the different epidemiology health care systems disease management practice patterns and treatment costs in different countries
Criteria Grid Hepatitis C Research Studies Tools and Surveillance Systems
Are the best practicesmethodologyresults described applicable in developed countries
Similar cost-effectiveness systematic review can be done However results cannot be generalized to various countries because of treatment costs differences and HCV management screening and treatment
YES NO NA COMMENTS
Are the best practicesmethodologyresults described applicable in developing countries
Studies included in this review originate only from European countries and USA
The research studytooldata dictionary is easily accessedavailable electronically
Purchase required for access at httponlinelibrarywileycom
Is there evidence of cost effective analysis with regard to interventions diagnosis treatment or surveillance methodologies If so what does the evidence say Please go to Comments section
Seven cost-effectiveness studies included in this review
- Incremental cost-effectiveness ratios (ICER) varied depending on the target population study perspective time horizon discount rate and compared strategies
- ICER of HCV screening vs no screening varied from 18300 to 1151000 euroQALY
- Screening in blood recipients not cost-effective given ICER over 140600 euroQALY
- HCV screening was considered cost-effective (ICURs below 40000 euroQALY for treatment with peg-IFN plus RBV) in populations with an elevated HCV prevalence such as intravenous drug users
Are there increased costs (infrastructure manpower skillstraining analysis of data) to using the research studytooldata dictionary
How is the research studytool funded Please got to Comments section
This study was supported in part by Hoffmann La-Roche Ltd Basel Switzerland
Is the best practiceintervention dependent on external funds
Other relevant criteria
Long-term effectiveness
- 5 out of 7 cost-effectiveness studies shown undiscounted life years andor quality-adjusted life years gained for screening and early treatment for HCV compared to no screening and standard care
- Depending on HCV prevalence and risk selection mode the long-term effectiveness of HCV varied from 00004 LYG (015 life-days gained) to 0066 LYG (24 life-days gained) and from 00001 QALY (004 quality adjusted life-days gained) to 0072 QALY (26 quality-adjusted life-days gained)
WITHIN THE SURVEILLANCE SYSTEM FOR REVIEW
Are these data regularly collected
Literature search was limited to March 2007
Are these data regularly collected at andor below a national level
Are these data collected manually or electronically
Electronically searched using databases Medline Cochrane Database of Systematic Reviews Cochrane central register of controlled trials and the NHS databases abstracts of reviews of effects Health technology assessment and Economic evaluation database
RESEARCH REPORTS
Has this research been published in a juried journal
Journal of Viral Hepatitis
Does the evidence utilize the existing datasurveillance information or has it generated new data andor information
Existing data included Health Technology Assessment (HTA) reports systematic reviews long-term clinical trials full health economic and decision-analytic modeling studies
Long-term effectiveness and cost-effectivenessof screening for Hepatitis C virus infection
Gaby Sroczynski1 Eva Esteban1 Annette Conrads-Frank12 Ruth Schwarzer1Nikolai Muhlberger1 Davene Wright2 Stefan Zeuzem3 Uwe Siebert124
Background Hepatitis C virus (HCV) infection is an emerging problem in public health In mostcountries the majority of HCV infected people are yet undiagnosed Early detection and treatmentmay result in better health outcomes and save costs by preventing future advanced liver disease Theevidence for long-term effectiveness and cost-effectiveness of HCV screening was systematicallyreviewed Methods We performed a systematic literature search on long-term health-economic effectsof HCV screening and included Health Technology Assessment (HTA) reports systematic reviewslong-term clinical trials full health economic and decision-analytic modelling studies with a sufficientlylong time horizon and patient-relevant long-term outcomes such as life-years gained (LYG) or quality-adjusted life years (QALY) gained Economic results were converted to 2005 Euros Results Seven studieswere included Target population HCV prevalence study perspective discount rate screening andantiviral treatment mode varied The incremental effectiveness of HCV screening and early treatmentcompared to no screening and standard care varied from 00004 to 0066 LYG and from 00001 to 0072QALY Incremental cost-effectiveness and cost-utility ratios of HCV screening vs no screening were3900ndash243 700ELYG and 18 300ndash1 151 000EQALY HCV screening seems to be cost-effective inpopulations with high HCV prevalence but not in low HCV prevalence populations Conclusions HCVscreening and early treatment have the potential to improve average life-expectancy but should focuson populations with elevated HCV prevalence to be cost-effective Further research on the long-termhealth-economic impact of HCV screening when combined with appropriate monitoring strategiesin different European health care systems is needed
Keywords chronic hepatitis C cost effectiveness screening
Introduction
Chronic Hepatitis C (CHC) is an emerging problem inpublic health In Europe the Hepatitis C virus (HCV)
infection affects gt 1 of the population with a HCV-incidenceof 86100 00012 HCV prevalence differs considerably acrosscountries and risk groups3 The highest HCV prevalence(36ndash81) is currently found in intravenous drug users(IDUs)1
The majority of HCV-infected people progress to chronicdisease4 Approximately 15ndash20 of CHC cases developcirrhosis within 20ndash30 years5ndash12 which is associated with ahigh risk for advanced liver disease quality of life impairmentreduced life expectancy and high treatment costs CHC isconsidered to be the leading cause of liver cancer and livertransplantation in Europe13
Screening for CHC clearly fulfils the general criteriafor population screening1415 and may help to identify
HCV-infected patients in an early stage of the disease(eg mild chronic hepatitis without fibrosis) so that theycan be adequately monitored and treated Moreover it hasbeen reported that it may be cost-effective to treat patientsdiagnosed with mild disease1617 Furthermore for the majorityof acute HCV cases which present no symptoms earlytreatment and for symptomatic acute HCV cases watchfulwaiting may be currently the most effective and cost-effectivestrategies18 Thus early detection and early treatment mayhave the potential to result in better health outcomes and tosave costs by preventing future advanced liver disease Anotherimportant reason to identify unaware HCV-infected persons isto prevent further HCV-transmission using appropriateinterventions to change behaviour leading to HCV transmis-sion (eg needle sharing)However currently most European countries lack specific
policies for HCV screening Only few European countriesperform HCV screening in special subpopulations withelevated HCV prevalence But even in these cases the recom-mendations and medical practices are heterogeneous19ndash21
In March 2007 the European Parliament called for EU-wideaction on Hepatitis C by formally adopting the WrittenDeclaration on Hepatitis C22 Specifically the EuropeanParliament calls for a council recommendation on HepatitisC screening to ensure early diagnosis and wider access totreatment and care within the member states Furthermore theEuropean Liver Patients Association (ELPA) strongly suggeststhat the European Union should encourage tailored screeningcampaigns that target people in at-risk groups23
Despite all potential benefits HCV screening may havesubstantial health-economic consequences and it is not clearwhether it leads to improved long-term health outcomesbecause not all CHC patients will develop progressive liverdisease in their lifetime and not all CHC patients benefitfrom antiviral treatment162425 Furthermore current antiviral
Correspondence Uwe Siebert Department of Public HealthInformation Systems and Health Technology Assessment UMIT ndashUniversity for Health Sciences Medical Informatics and TechnologyEduard Wallnoefer Center I A-6060 Hall iT Austria tel +43-50-8648-3930 fax +43-50-8648-673930 e-mail public-healthumitat
1 Department of Public Health Information Systems and HealthTechnology Assessment UMIT ndash University of Health SciencesMedical Informatics and Technology Hall iT Austria
2 Institute for Technology Assessment and Department of RadiologyMassachusetts General Hospital Harvard Medical School BostonMA USA
3 Department of Internal Medicine Gastroenterology HepatologyPneumology and Endocrinology Johann Wolfgang Goethe-University Frankfurt aM Germany
4 Program in Health Decision Science Department of Health Policyand Management Harvard School of Public Health Boston MAUSA
European Journal of Public Health Vol 19 No 3 245ndash253
The Author 2009 Published by Oxford University Press on behalf of the European Public Health Association All rights reserved
doi101093eurpubckp001 Advance Access published on 5 February 2009
treatment options are costly and impose the burden of sideeffects162425 Therefore a thorough assessment of HCVscreening must consider all consequences for individuals andsociety during a sufficiently long time horizonIn this review we systematically evaluated the current
evidence on long-term effectiveness and cost-effectivenessof screening for Hepatitis C virus infection in differentpopulations
Methods
A systematic literature search was conducted using thedatabases Medline Cochrane Database of SystematicReviews Cochrane central register of controlled trials(CENTRAL) and the NHS databases abstracts of reviews ofeffects (DARE) Health technology assessment (HTA) andEconomic evaluation database (NHS EED) to identify studiesassessing the clinical and economic long-term consequencesof screening for Hepatitis C virus infection (HCV) The timehorizon of the literature search was limited to March 2007 Allreferences were imported into a literature database usinga literature management software program (EndNote 90Thomson ResearchSoft TM Thomson Corporation StamfordCT USA)First reference titles and abstracts were screened for
relevant articles In a second step studies were selected basedon a priori inclusion and exclusion criteria after reading thefull text document We included health technology assessment(HTA) reports systematic reviews long-term clinical trialsfull health economic studies and decision-analytic modellingstudies assessing the impact of screening for Hepatitis C virusinfections As clinical and economic consequences of screeningoccur over a long time horizon we only included studies thatreported both long-term effectiveness and cost effectiveness interms of life-years gained (LYG) quality-adjusted life-yearsgained (QALY) lifetime cost per life-year gained (CostLYG)or cost per quality-adjusted life-year gained (CostQALY)We excluded studies in languages other than English orGerman editorials letters abstracts unsystematic reviewsstudies reporting only short-term effectiveness data (egsustained virological response SVR) studies assessing screen-ing of blood donations or serological testing during antiviraltreatment We also excluded studies that did not reportsufficient data to derive incremental effectiveness and cost-effectiveness ratios or cost-effectiveness studies reporting onlycosts per HCV case detectedWe systematically extracted the results from the publications
and summarized the information in evidence tables reportingclinical and economic outcomesIf necessary and possible we recalculated the incremental
cost-effectiveness ratios (ICER) or incremental cost-utilityratios (ICUR) from the data reported in the publicationTo facilitate comparison across countries and to enable othercountries to transfer our results into their currencies all costswere converted to 2005 Euro (E) using gross domestic productpurchasing power parities (GDPPP) (conversion to Euro ofthe index year) and the German Consumer Price Index(CPI) (inflation to the year 2005)2627 Germany was used asthe reference country for the cost conversion because it is thecountry with the largest population in Europe28
Results
Literature search
A total of 127 unique references were retrieved Tenpublications2029ndash37 including two HTA reports 2036 assessing
lifetime health effects and costs of screening for Hepatitis Cmet the inclusion criteria No long-term clinical trial assessingthe long-term effectiveness (eg mortality) of screening forHepatitis C virus infection and early HCV-treatment wasidentifiedTwo publications by Stein et al3334 reported the cost-
effectiveness results of a decision-analytic model performedwithin an HTA report conducted by the National Institute forHealth and Clinical Excellence (NICE)20 Thompson Coonet al37 reported the cost-effectiveness results of a decision-analytic model performed within an HTA report conductedby the NHS RampD HTA Program36 Only the original data fromthe HTA reports were considered leaving seven studiesin the review
Long-term effectiveness
In the absence of clinical trials meta-analyses and healthtechnology assessment reports evaluating the long-termeffectiveness of HCV screening we based our results ondecision-analytic modelling studies that included an analysis oflong-term effectiveness of screening for Hepatitis C virusinfection and early HCV-treatment in terms of undiscountedlife years andor quality-adjusted life years gained comparedto no screening and standard careFive out of seven cost-effectiveness studies reported undis-
counted life years andor quality-adjusted life years gained forscreening and early HCV-treatment compared to no screeningand standard care (table 1)2029303536
The values for life years gained due to screening andearly treatment varied from 00004 LYG (015 life days) forscreening blood recipients to 0066 LYG (241 life days) forscreening all patients assessed for HBV vaccination attendingdrug and alcohol services QALYs varied from no gain forscreening in pregnant women to 0072 QALYs (ie 26 quality-adjusted life days) for screening in patients assessed for HBVvaccination attending drug and alcohol services Screening inpopulations with elevated HCV prevalence (eg IDU) wasmore effective in terms of life-years or QALYs gained Studiesreported 0036ndash0066 LYG (131ndash241 life days) for populationswith 42ndash68 HCV prevalence (0010ndash0072 QALYs37ndash263quality-adjusted life days 32ndash68 HCV prevalence) vs00004ndash0013 LYG (01ndash47 life days) for populations with3ndash16 HCV prevalence (0ndash0022 QALYs0ndash80 quality-adjusted life days 1ndash16 HCV prevalence)
Long-term cost-effectiveness
Health technology assessment reports
Two HTA reports were included One summarizedresults from economic studies evaluating HCV-screeningprogrammes and both HTA reports conducted a cost-effectiveness analysisStein et al 20 systematically reviewed the evidence from
health economic studies evaluating HCV-screening pro-grammes All reviewed studies had methodological limitationsand the results were of limited transferability to the UKcontext Based on their decision-analytic results the authorsconcluded that screening for Hepatitis C in intravenous drugusers in contact with medical services may be moderately cost-effective However the authors recommend interpreting theirresults with caution because of substantial uncertainty aroundthe acceptability of screening the adherence to treatment andthe simple nature of the model General screening in genito-urinary medicine (GUM) clinics is less cost-effective andassociated with greater uncertainty than screening IDUs incontact with medical services
246 European Journal of Public Health
Table
1Lo
ng-term
effectiveness
ofscreeningforhepatitisCundisco
untedlife
years
andorQALY
StudyCountry
Population
HCV
prevalence
()
ScreeningTreatm
ent
Incremental
life
years
(LYG)
Incremental
quality-adjusted
life
years
(QALY
)
Castelnuovo
etal36
Form
erIDUsmeanage37ye
ars
49
Systematicscreeningvsnosystematicscreening(spontaneous
0058
0071
(ThompsonCoonetal37)
Generalpracticemeanage37ye
ars
125
presentationto
screeningpossible)HCV-positive
sreceive
0010
0017
NHSRampD
HTA
Programme
UK
Form
erandcu
rrentIDUsin
generalpracticemean
age37ye
ars
49
treatm
entPegIFN+RBV
0036
0071
Allpatients
assessedforHBVva
ccinationattending
drugandalcoholservicesmeanage37ye
ars
68
0066
0072
Prisoners
atreceptionmeanage37ye
ars
(general
counseling)
16
0013
0022
Prisoners
atreceptionmeanage37ye
ars
(counseling
withIDU
focu
s)
42
0036
0058
JusotandColin30
France
Bloodrecipientslt40ye
ars
3ScreeningwithEIA3aftertransfusiontreatm
entforHCV-positive
s
withKnodellscore
5IFN
vsnoscreening+nomedicaltherapy
00085
na
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3ScreeningwithEIA3aftertransfusiontreatm
entforHCV-positive
s
withKnodellscore
5IFN
vsnoscreening+nomedicaltherapy
00004
na
Bloodrecipients
receivinghigh-volumetransfusions
3ScreeningwithEIA3before
andaftertransfusion(treatm
entsame
asabove
)
00030ndash0
0047a
na
Lealetal29
UK
IDUsin
contact
withdrugservicesmeanagena
60
ScreeningvsnoscreeningHCV-positive
swithmoderate
toseve
re
CHCreceivetreatm
entIFN
na
0015b
Plunkett
etal35
USA
Pregnantwomenmeanage30ye
ars
1Screeningvsnoscreening70
(screened)or20
(unscreened)of
HCV-positive
swithmoderate
CHCreceivetreatm
ent
PegIFN+RBV
na
000011
1Screeningandtreatm
entasabove
plusCaesariandelive
ryna
00001
Stein
etal20
(Stein
etal20033334)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
Screeningvsnoscreening50
ofHCV-positive
swithmoderate
CHCreceivetreatm
entIFN+RBV
na
001003b
NHSRampD
HTA
Programme
UK
Genito-urinary
medicineclinic
attendeesmeanage36ye
ars
15
Screeningvsnoscreening50
ofHCV-positive
swithmoderate
CHCreceivetreatm
entIFN+RBV
na
000047b
aRangereportedin
theoriginalstudyforthefirstseco
ndandthirdye
ar
bCalculatedwithdata
intheoriginalpublication
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 247
Castelnuovo et al36 performed a decision-analytic cost-effectiveness study to evaluate screening (named lsquocase-findingrsquo)in patients attending general medical practice or special drugand alcohol services and in prisoners at reception with a focuson former IDUs Based on their analyses the authorsconcluded that screening in these target populations is likelyto be cost-effective despite some uncertainty around theacceptance of testing and treatment
Cost-effectiveness studies
Seven cost-effectiveness studies evaluating HCV screeningin different population settings were included in our review(table 2) Three studies were conducted in the UK202936 twoin France3032 and two in the USA3135
Studies varied in terms of target population study pers-pective time horizon discount rate and compared strategiesincluding screening and antiviral treatment modeFive studies2030ndash3235 evaluated populations at average risk
for Hepatitis C (HCV prevalence 1ndash38) Of those one studyevaluated HCV screening in asymptomatic average-risk adultsin the USA31 one study examined screening in the generalFrench population32 and another study analysed screening inpregnant women in the USA35 two studies consideredscreening in blood recipients3032 and one in generalGenito-urinary medicine clinic attendees20
Four studies20293236 evaluated the cost-effectiveness ofscreening in different populations at higher risk for HCV(HCV prevalence 7ndash80) Four studies evaluated HCVscreening in populations with a history of IDU in differentsettings20293236 two studies analysed the cost-effectiveness ofgeneral screening in attendees of special medical services2036
and one study evaluated HCV screening in prisoners atreception36
Most studies compared systematic screening (and antiviraltreatment for detected HCV-positives) to non-systematicscreening allowing for the possibility of spontaneouscase detection with subsequent antiviral treatment20313536
The percentage of HCV positives eligible for treatment variedSome studies compared screening and antiviral treatmentfor detected HCV positives to no screening and notreatment293032 The antiviral treatment regimens(interferoninterferon plus ribavirinpeginterferon plusribavirin) and algorithms (eg treat all HCV-positives oronly those with severe liver histology) varied Only threestudies203536 evaluated screening followed by peginterferonplus ribavirin the current recommended standard antiviraltherapy38ndash40
The incremental cost-effectiveness ratios (ICER) of HCVscreening vs no screening varied over a wide range (18 300ndash1 151 000EQALY if not dominated) depending on targetpopulation study perspective time horizon discount rate andcompared strategies including screening mode and antiviraltreatment strategies In summary HCV screening in popula-tions with an average HCV prevalence and in pregnant womenwas dominated by no screening Screening in blood recipientsyielded an ICER over 140 600ELYG and was considerednot to be cost-effective30 However this study had a timehorizon of 30 years instead of lifetime and used interferonmonotherapy as antiviral treatment option In contrast HCVscreening in populations with a high HCV prevalencesuch as current or former intravenous drug users was con-sidered cost-effective HCV screening in current andorformer intravenous drug users yielded discounted incre-mental cost-effectiveness ratios below 46 700EQALY2036
General HCV screening amongst members of specialmedical practices (140 500EQALY)20 or in prisoners atreception (30 200EQALY)36 were associated with higher
cost-effectiveness ratios compared to more targeted screening(eg screening only IDUs in these settings)Figure 1 shows the incremental ICER and ICUR ratios of
screening for different HCV prevalence and different antiviraltreatment strategies Most studies evaluated the ICERsICURsin populations with HCV prevalence above 10 Only fourstudies reported results for populations with a lower HCVprevalence Many studies evaluated screening followed byantiviral treatment with interferon or interferon plus ribavirinwhich are not current standard treatment options anymorePeginterferon plus ribavirin the recommended standardantiviral treatment yields more LYsQALYs gained and resultsin much lower ICERsICURs Therefore figure 1c and d showsICERsICURs for screening followed by treatment withpeginterferon plus ribavirin only The majority of thesestudies reported ICURs below 40 000EQALY gained (ICER50 000ELYG) in populations with HCV prevalence above10 and higher ICURs (77 000ndash1 150 000EQALY gained) inlow HCV prevalence populations (results from two studies)
Discussion
We performed a systematic review on the long-term effective-ness and cost-effectiveness of screening for HCV infectionDepending on HCV prevalence and risk selection mode
the incremental long-term effectiveness of HCV screening andearly treatment compared to no screening and standard carevaried from 00004 LYG (015 life-days gained) to 0066 LYG(24 life-days gained) and from 00001 QALY (004 quality-adjusted life-days gained) to 0072 QALY (26 quality-adjustedlife-days gained) To put these figures into perspective theycan be compared with other screening programs For examplebiennial cervical cancer screening compared to no screening isassociated with a gain of 92 life days Moving from a 2-year toa 1-year interval is associated with a gain of four life days41
Given 1 undetected HIV-prevalence one-time HIVscreening in US health care settings was reported to increaselife-expectancy by 39 days (29 quality-adjusted life days)Screening every 5 years would gain additional 097 days(070 quality-adjusted life days)42
It must be noted that these numbers reflect the averageincremental life expectancy per person screened This trans-lates to many persons with no gain and some persons withseveral years or decades gain in life expectancyThe incremental cost-effectiveness ratios varied over a wide
range depending on target population (eg HCV prevalenceage etc) study perspective time horizon discount rate andcompared strategies including screening settings and antiviraltreatment strategies Therefore the comparability of theresults is limitedHCV screening vs no screening resulted in ICURs ranging
from 18 300 to 1 151 000EQALY if screening was notdominated In the reviewed studies HCV screening wasconsidered cost-effective (ICURs below 40 000EQALY fortreatment with peginterferon plus ribavirin) in populationswith an elevated HCV prevalence such as intravenous drugusers General HCV screening in average-risk adults wasunlikely to be effective and cost-effectiveHowever cost-effectiveness should not be the main criterion
for the decision to implement HCV screening Given thesubstantial number of prevalent iatrogenic HCV-infected casesother ethical concepts such as fairness and equity may beconsidered as wellCost-effectiveness is depending on the willingness-to-pay in
a certain society which depends on several economical socialand political factors There is currently no general agreementacross countries about the cost-effectiveness threshold To givea measurement on the incremental cost-effectiveness ratios of
248 European Journal of Public Health
Table
2Disco
untedincrementalco
st-effectiveness-ratios(ICER)anddisco
untedincrementalco
st-utility-ratios(ICUR)forscreeningforhepatitisC
StudyCountry
CurrencyYear
Perspective
Disco
unt
rate
()
Comparator
TargetPopulation
ICER
(ELYG)
ICUR
(EQ
ALY
)
Castelnuovo
etal36
(ThompsonCoon
UKpound2004
NationalHealth
6(costs)15
(effects)
Systematicscreeningvsnosystematicscreening
(spontaneouspresentationto
screeningpossible)
Form
erIDUsgeneralcasemeanage37ye
ars49
HCV
preva
lence
30232
24858
etal37)
Services(N
HS)
HCV-positive
sreceivetreatm
entPegIFN+RBV
Generalpracticemeanage37ye
ars125
HCVpreva
lence
38633
23321
NHSRampD
HTA
Programme
Form
erandcu
rrentIDUsin
generalpracticemeanage
37ye
ars49
HCV
preva
lence
30194
24827
UK
Allpatients
assessedforHBVva
ccinationattendingdrugand
alcoholservicesmeanage37ye
ars68
HCV
preva
lence
28689
26365
(Screeningincludedgenerallecture
onHCV)
Prisoners
atreceptionmeanage37ye
ars16
HCVpreva
lence
50833
30231
(Screeningincludedlecture
withfocu
sonIDU
andrisk
ofHCV)
Prisoners
atreceptionmeanage37ye
ars42
HCVpreva
lence
40301
24813
JusotandColin30
France
FF1996Health
care
system
30ye
ars
time
Nodisco
unt
rate
ScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipientslt40ye
ars3
HCV
preva
lence
140674
mdash
horizo
nScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3
HCV
preva
lence
477654
mdash
ScreeningwithEIA3before
andaftertransfusion
(treatm
entsameasabove
)
Bloodrecipients
receivinghigh-volumetransfusions
3
HCV
preva
lence
144970
mdash
Lealetal29
UKpound1997na
6ScreeningvsnoscreeningHCV-positive
swithmoderate
IDUsin
contact
withdrugservices60
HCV
preva
lence
mdash119754
UK
toseve
reCHCreceivetreatm
entIFN
(IFN
+RBV)
(18267-34537a)
Loubiere
etal32
France
E1998Health
care
system
3ScreeningwithEIA3+EIA3vsnoscreening+notreatm
ent
50
ofCHCcasesand40
ofcirrhosiscasesreceive
treatm
entIFN+RBV
IDUs80
HCV
preva
lence
3881
mdash
ScreeningwithEIA3+PCRvsnoscreening+notreatm
ent
treatm
entasabove
9742
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
Patients
transfusedbefore
19917
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
243737
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
GeneralFrench
population12
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
5005
mdash
Plunkett
etal35
USA
US$
2003Health
care
system
3ScreeningvsnoscreeningHCV-positive
sreceivetreatm
ent
PegIFN+RBV
Pregnantwomen1
HCV
preva
lence
mdashNoscreening
dominant
Asabove
plusCaesariandelive
rymdash
1150976
Singeretal31
USA
US$
2001S
ocietal
3Screeningvsnoscreening20
ofHCV-positive
sreceive
treatm
entIFN+RBV
Asymptomatic
ave
ragerisk
adultsmeanage35ye
ars
38
HCV
preva
lence
mdashNoscreening
dominant
Stein
etal20
(Stein
etal3334)
UKpound2001
NationalHealth
6(costs)15
(effects)
Screeningvsnoscreening50
ofHCV-positive
swith
moderate
CHCreceivetreatm
entIFN+RBV(PegIFN+RBV)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
HCV
preva
lence
mdash46707(23598)
NHSRampD
HTA
Programme
Services(N
HS)
Allscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV(PegIFN+RBV)
Genito-urinary
medicineclinic
attendeesmeanage
36ye
ars15
HCVpreva
lence
mdash140471(77052)
UK
IDUsscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV
32
HCVpreva
lence
mdash45076
aDependingontreatm
entduration(24or48weeks)
andribavirindosage(1000or1200mgd)
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 249
well-accepted screening programs cytological screening forcervical cancer every 3 years compared to no screening costspound1800 per life year gained in the UK43 1400ELYG inGermany44 and 8400 US$LYG in the USA45 Screening blooddonors for HIV costs 14 000 US$LYG46 Given 1 undetectedHIV-prevalence one-time HIV screening in US health caresettings would result in 41 700 US$QALY screening every 5years 123 600 US$QALY42
In the absence of long-term clinical trials all results wereretrieved from decision-analytic studies which link diagnosticand clinical short-term outcomes (eg test sensitivity andspecificity or viral response) to clinical long-term outcomes(eg mortality and long-term quality of life)47 The includedstudies were heterogeneous in regard to health economicanalysis techniques (eg time horizons discounting etc)HCV population prevalence acquisition risk factors andantiviral therapy Therefore the outcomes in terms of lifeyears gained quality adjusted life years and incremental costeffectiveness ratios varied over a wide range However severalresults were logical and predictable for example screening ismore cost effective in higher prevalence or higher riskpopulationsmdasha result that has been reported for other diseasestoo4849
Like all decision-analytic models screening models mustsimplify the real world for more transparency and thepossibility to analyse specific research questions47 However
some methodological and structural model assumptions mayhave an important impact on clinical and economic outcomesand could lead to bias in favour for or against HCV screeningThus it is important to discuss some aspects essential fora valuable screening modelFirst it is important to allow for the possibility of
spontaneous case detection by symptoms with subsequentantiviral treatment in the non-screening strategy of any HCV-screening model Without these estimates the benefits of thescreening strategy are overestimated and outcomes are biasedin favour of the HCV-screening strategy Second the settingof antiviral treatment in both strategies is very important Notreatment in the non-screening strategy or lsquowait and treatcirrhosisrsquo vs lsquoscreen and treat all HCV-positive patientsrsquomay overestimate both the incremental benefits and costs ofscreening Therefore antiviral treatment should be consideredfor chronic HCV-patients (detected through screeningsymptoms or spontaneous presentation) in both strategiesaccording to recent treatment guidelines Third moststudies considered antiviral therapy with interferon plusribavirin20293132 and two studies used even interferonmonotherapy293032 Only three studies considered peginter-feron plus ribavirin203536 Having better treatment optionsand administering antiviral treatment according to genotype-specific guidelines with early treatment stop for patients notresponding would allow tailoring treatment efficiently which
Figure 1 Incremental cost-effectiveness ratio of screening compared to no screening in Euro per life year gained (EuroLYG) orquality-adjusted life-year gained (EuroQALY) for different HCV prevalence in the target population (a) ICER (in EuroLYG) ofHCV screening and different antiviral treatment (b) ICUR (in EuroQALY) of HCV screening and different antiviral treatment (c)ICER (in EuroLYG) of HCV screening and antiviral treatment with peginterferon plus ribavirin (d) ICUR (in EuroQALY) of HCVscreening and antiviral treatment with peginterferon plus ribavirin (Each point represents the ICERICUR of a specific targetpopulation and screeningtreatment strategy Multiple points may come from the same modelling study) IFN= interferonRBV= ribavirin PegIFN=peginterferon One point out of range of figure 1(d) 1 150 976QALY with 1 HCV prevalencePegIFN+RBV
250 European Journal of Public Health
would reduce adverse effects harms and antiviral treatmentcosts and improve the cost-effectiveness of HCV screening dueto better clinical and economic outcomes Fourth eligibilityof patients for and adherence to antiviral treatment shouldbe considered In particular any HCV-screening modelshould consider a lsquowait and seersquo strategy in the screeningarm because not all patients necessarily should or want to betreated immediately after HCV detection50 HCV screeningand watchful monitoring HCV-infected patients may be moreeffective and cost-effective than screening with immediatetreatment of all HCV-infected patients since a fraction ofHCV-infected patients may not develop fibrosis or cirrhosisduring their lifetime This is particularly important for theelderlyThe age at which HCV-infected patients are identified and
treated is a very important modelling factor as well Moststudies used an average age of 40 years for the evaluatedpopulation which may be adequate for patients with CHCwhich already developed symptoms However HCV screeningmay detect HCV-infected individuals earlier at significantlyyounger age In addition certain HCV-infected populationsat risk for advanced liver disease such as intravenous druguser or ethnic minority groups who have acquired HCViatrogenically in early childhood have a significantly youngeraverage age Thus in these cases benefits from early detectionand treatment may be underestimatedDiscounting costs and effects is important and affects ICERs
since the clinical and economic benefits of screening due toavoided cirrhosis and its sequelae occur in the distant futurewhereas the costs of screening and antiviral treatment occurmuch earlier One study30 in France did not discount at all andtwo studies 2036 conducted in the UK used different discountrates for costs and effects The ICERs increased significantly insensitivity analyses when cost and effects were equallydiscounted with 35 annually (eg from 16 514 poundQALY to33 235 poundQALY36)Most studies used a lifelong time horizon for their analyses
which is the most adequate timeframe to use As benefits thatoccur far in the future will not be considered within shortertime horizons estimated cost-effectiveness ratios may be toohigh One study used a 30 year time horizon30 As cirrhosisand its complications develop slowly within 10ndash30 years eventhis time horizon may be too short and benefits may beunderestimatedAll studies included in this review take into account the
natural history of chronic Hepatitis C disease progression andmortality from CHC-related complications Only one studyused the natural history of chronic Hepatitis B diseaseprogression as at that time no information existed regardingHepatitis C progression However it was not always clearwhether slower progression rates were considered for screenedpopulations tending to present histological milder Hepatitis Ccompared to non-screened populations mostly detected bysymptoms Several studies reported that patients with mildCHC and normal ALT levels may have a reduced risk ofprogression to cirrhosis compared to patients with more severehistology or elevated ALT levels751ndash54 Furthermore analysesfor CHC patients co-infected with HIV should assume higherprogression rates to CHC-related liver diseases than analysesin non-co-infected CHC patients5556In addition most studies used age- and gender-specific
mortality rates of the general population for the backgroundmortality for CHC patients However background mortality isoften higher due to co-morbidity from other diseases such asHIV- or HBV-coinfection or in case of IDUs from continua-tion of or relapse to drug abuse Even patients with moderateCHC or cirrhosis that respond to antiviral treatment continue
to have an increased risk of developing hepatocellularcarcinoma which is associated with significant mortalityOverall this review discovered many study limitations and
the need for further systematic research in HCV screeningParticularly health-economic studies in population with lowor average HCV prevalence evaluating HCV screeningcombined with different strategies of monitoring and antiviraltreatment of HCV-positives according to current treatmentstandard are requiredFinally it must be mentioned that due to different
epidemiology health care systems disease managementpractice patterns and treatment costs in different Europeancountries results cannot be generalized and are difficult if notimpossible to be directly transferred from one country toanother Further research should focus on the development ofa Pan-European Hepatitis C screening model that fulfils thequality criteria discussed above and which can be adapted tothe context of the different health care systems and countrieswithin Europe
Conclusion
Although HCV screening fulfils general population screeningcriteria specific well-formulated national programs forHepatitis C screening are lacking in most European countriesBased on current evidence HCV screening and early treatmenthas the potential to improve average life-expectancy butshould focus on populations with elevated HCV prevalence tobe cost-effective Further research is needed to investigate thelong-term health-economic impact of HCV screening whencombined with appropriate monitoring and treatmentstrategies in different European health care systems Furtherassessments should focus on determining optimal targetgroups and settings that yield effective and cost-effectiveHCV screening strategies
Acknowledgements
We thank the members of the PanEuropean Hepatitis C ExpertPanel for providing local information and reviewing the resultsof our study Maria Buti MD Hospital General UniversitarioVall de Hebron Barcelona Spain Florin Caruntu Matei BalsInfectious Disease Institute Bucharest and Carol DavilaMedicine and Pharmacy University Bucharest RomaniaCharles Gore The Hepatitis C Trust London UK Scott DHolmberg MD MPH Epidemiology and Surveillance BranchDivision of Viral Hepatitis Prevention NCHHSTP Centers forDisease Control and Prevention Atlanta GA USA NadinePiorkowsky The European Liver Patients Association (ELPA)Germany Prof William Rosenberg Institute of HepatologyUniversity College London UK However the authors aloneare responsible for the results reported and views expressed inthe paper The authors had complete and independent controlover study design analysis and interpretation of data reportwriting and publication regardless of results
Funding
This project was supported in part by an unrestrictededucational grant from Hoffmann La-Roche Ltd BaselSwitzerland
Conflicts of interest NM has received travel support fromHoffmann La-Roche Ltd to present preliminary results of thestudy to different audiences US has received healthtechnology assessment research grants from the GermanFederal Ministry of Health and the Austrian Academy of
Cost-effectiveness of HCV-screening 251
Sciences and unrestricted research grants from ScheringPlough and Roche
Key points
Although HCV screening fulfils general populationscreening criteria specific well-formulated nationalpublic health programs for hepatitis C screening arelacking in most European countries
According to this review HCV screening with earlytreatment has the potential to improve averagelife-expectancy but should focus on populationswith elevated HCV prevalence to be cost-effectiveAppropriate target groups could be selected based onrisk factor profiles
Appropriate monitoring and treatment strategiesfor detected early disease may improve the cost-effectiveness of HCV screening
In view of the multitude of iatrogenic infectionshowever cost-effectiveness may not be the onlydecision criterion for the implementation of HCVscreening Aspects like fairness might be considered aswell
Further research should focus on the public-healthimpact of HCV screening when combined withappropriate monitoring and treatment strategies andon determining optimal target groups and settings
References
1 Weissing L Roy K Sapinho D et al Surveillance of hepatitis C infection
among injecting drug users in the European Union In Jager J Limburg W
Kretzschmar M et al editors Hepatitis C and injecting drug use
Luxembourg European Monitoring Centre for Drugs and Drug Addiction
2006 91ndash135
2 European Centre for Disease Prevention and Control (ECDC) Annual
epidemiologic report on communicable diseases in Europe 2007 http
wwwecdceuropaeu (date last accessed 28 June 2007)
3 Rantala M van de Laar MJ Surveillance and epidemiology of hepatitis B and
C in Europe ndash a review Euro Surveill 200813 Available online
httpwwweurosurveillanceorg (date last accessed 13 December 2008)
4 Alter H Seeff L Recovery persistence and sequelae in hepatitis C virus
infection a perspective on long-term outcome Semin Liver Dis
20002017ndash35
5 Anonymous EASL international consensus conference on hepatitis C
Paris 26ndash27 February 1999 Consensus statement J Hepatol
199931(Suppl 1)3ndash8
6 Dore GJ Freeman AJ Law M Kaldor JM Is severe liver disease a common
outcome for people with chronic hepatitis C J Gastroenterol Hepatol
200217423ndash30
7 Freeman A Dore G Law M et al Estimating progression to cirrhosis in
chronic hepatitis C virus infection Hepatology 200134809ndash16
8 Freeman AJ Law MG Kaldor JM Dore GJ Predicting progression
to cirrhosis in chronic hepatitis C virus infection J Viral Hepat
200310285ndash93
9 Hopf U Moller B Kuther D et al Long-term follow-up of posttransfusion
and sporadic chronic hepatitis non-A non-B and frequency of circulating
antibodies to hepatitis C virus (HCV) J Hepatol 19901069ndash76
10 Koretz R Abbey H Coleman E Gitnick G Non-A non-B post-transfusion
hepatitis Looking back in the second decade Ann Intern Med
1993119110ndash5
11 Mattsson L Outcome of acute symptomatic non-A non-B hepatitis
a 13-year follow-up study of hepatitis C virus markers Liver
199313274ndash8
12 Tremolada F Casarin C Alberti A et al Long-term follow-up of non-A
non-B (type C) post-transfusion hepatitis J Hepatol 199216273ndash81
13 World Health Organization (WHO) Global surveillance and control of
hepatitis C Report of a WHO consultation organized in collaboration with
the Viral Hepatitis Prevention Board Antwerp Belgium J Viral Hepatitis
1999635ndash47
14 Wilson J Jungner Y Principles and practice of mass screening for disease
Bol Oficina Sanit Panam 196865281ndash393
15 Wilson J The evaluation of the worth of early disease detection J R Coll Gen
Pract 196816(Suppl 2)48ndash57
16 Brady B Siebert U Sroczynski G et al Pegylated interferon combined with
ribavirin for chronic hepatitis C virus infection an economic evaluation
[Technology Report No 82] Ottawa Canadian Agency for Drugs and
Technologies in Health 2007
17 Wright M Grieve R Roberts J Main J Thomas HC on behalf of the UK
Mild Hepatitis C Trial Investigators Health benefits of antiviral therapy for
mild chronic hepatitis C randomised controlled trial and economic
evaluation Health Technol Assess 2006101ndash132
18 Maheshwari A Ray S Thuluvath PJ Acute hepatitis C Lancet
2008372321ndash32
19 Jullien-Depradeux AM Bloch J Le Quellec-Nathan M Abenhaim A
National campaign against hepatitis C in France (1999ndash2002) Acta
Gastroenterol Belg 200265112ndash4
20 Stein K Dalziel K Walker A et al Screening for hepatitis C among injecting
drug users and in genitourinary medicine clinics systematic reviews of
effectiveness modelling study and national survey of current practice
Health Technol Assess 200261ndash122
21 Department of HealthGeneral Health Protection Hepatitis C Action Plan
for England July 2004 Available at wwwdhgovukpublications (date last
accessed 12 November 2006
22 European Liver Patient Association (ELPA) European Parliament demands
EU-wide action on Hepatitis C 2007 httpwwwelpaorg (date last accessed
15 May 2007)
23 European Liver Patient Association (ELPA) Promoting Hepatitis C Screening
in Europe 2007 httpwwwelpaorg (date last accessed 8 May 2008)
24 Shepherd J Brodin HFT Cave CB et al Clinical- and cost-effectiveness of
pegylated interferon alfa in the treatment of chronic hepatitis C a systematic
review and economic evaluation Int J Technol Assess Health Care
20052147ndash54
25 Siebert U Sroczynski G on behalf of the German Hepatitis C Model
(GEHMO) Group and the HTA Expert Panel on Hepatitis C Antiviral
therapy for patients with chronic hepatitis C in Germany Evaluation of
effectiveness and cost-effectiveness of initial combination therapy with
InterferonPeginterferon plus Ribavirin Series of the German Institute for
Medical Documentation and Information commissioned by the Federal
Ministry of Health and Social Security Cologne DIMDI 2003
26 Organisation for Economic Co-operation and Development (OECD) Gross
domestic product purchasing power parities 2006 httpwwwoecdorg
27 German Federal Statistical Office German Consumer Price Index (CPI) 2006
httpwwwdestatisde
28 Population Division of the Department of Economic and Social Affairs of the
United Nations Secretariat World population prospects the 2006 revision and
world urbanization prospects the 2005 revision httpesaunorgunpp
29 Leal P Stein K Rosenberg W What is the cost utility of screening for
hepatitis C virus (HCV) in intravenous drug users J Med Screen
19996124ndash31
30 Jusot JF Colin C Cost-effectiveness analysis of strategies for hepatitis C
screening in French blood recipients Eur J Public Health 200111373ndash9
31 Singer ME Younossi ZM Cost effectiveness of screening for hepatitis C virus
in asymptomatic average-risk adults Am J Med 2001111614ndash21
32 Loubiere S Rotily M Moatti JP Prevention could be less cost-effective than
cure the case of hepatitis C screening policies in France Int J Technol Assess
Health Care 200319632ndash45
33 Stein K Dalziel K Walker A et al Screening for hepatitis C in genito-urinary
medicine clinics a cost utility analysis J Hepatol 200339814ndash25
34 Stein K Dalziel K Walker A et al Screening for Hepatitis C in injecting drug
users a cost utility analysis J Public Health 20042661ndash71
252 European Journal of Public Health
35 Plunkett BA Grobman WA Routine hepatitis C virus screening in
pregnancy a cost-effectiveness analysis Am J Obstet Gynecol
20051921153ndash61
36 Castelnuovo E Thompson-Coon J Pitt M et al The cost-effectiveness of
testing for hepatitis C in former injecting drug users Health Technol Assess
200610 iiindashiv ixndashxii 1ndash93
37 Thompson Coon J Castelnuovo E Pitt M et al Case finding for hepatitis C
in primary care a cost utility analysis Fam Pract 200623393ndash406
38 Sherman M Shafran S Burak K et al Management of chronic hepatitis C
consensus guidelines Can J Gastroenterol 200721(Suppl C)25Cndash34C
39 NIH Consensus Statement National institutes of health consensus devel-
opment conference management of Hepatitis C 2002 - June 10ndash12 2002
Hepatology 200236(5 Suppl 1)S3ndash20
40 Zeuzem S Standard treatment of acute and chronic hepatitis C
Z Gastroenterol 200442714ndash9
41 Siebert U Sroczynski G Hillemanns P et al The German cervical cancer
screening model development and validation of a decision-analytic model
for cervical cancer screening in Germany Eur J Public Health
200616185ndash92
42 Sanders G Bayoumi A Sundaram V et al Cost-effectiveness of screening for
HIV in the era of highly active antiretroviral therapy N Engl J Med
2005352570ndash85
43 Payne N Chilcott J McGoogan E Liquid-based cytology in cervical
screening a rapid and systematic review Health Technol Assess 200041ndash73
44 Siebert U Muth C Sroczynski G et al Liquid-based preparation and
computer-assisted examination of cervical smears in cervical cancer screening
Clinical effectiveness economic evaluation and systematic decision analysis
Series of the German Institute for Medical Documentation and Information
commissioned by the Federal Ministry of Health and Social Security St
Augustin Asgard 2004
45 McCrory DC Matchar DB Evaluation of cervical cytology - systematic
review HTA Report Agency for Health Care Research and Quality (AHRQ)
Report No 5 1999
46 Tengs T Adams M Pliskin J et al Five-hundred life-saving interventions
and their cost-effectiveness Risk Anal 199515369ndash90
47 Siebert U When should decision-analytic modeling be used in the
economic evaluation of health care [Editorial] Eur J Health Econ
20034143ndash50
48 Shamir R Hernell O Leshno M Cost-effectiveness analysis of
screening for celiac disease in adult population Med Decis Making
200626282ndash93
49 Hayashino Y Shimbo T Tsujii S et al Cost-effectiveness of coronary artery
disease screening in asymptomatic patients with type 2 diabetes and other
atherogenic risk factors in Japan factors influencing on international
application of evidence-based guidelines Int J Cardiol 200711888ndash96
50 Wong JB Koff RS Watchful waiting with periodic liver biopsy versus
immediate empirical therapy for histologically mild chronic hepatitis C A
cost-effectiveness analysis Ann Intern Med 2000133665ndash75
51 Alberti A Morsica G Chemello L et al Hepatitis C viremia and liver
disease in symptom-free individuals with anti-HCV Lancet
1992340697ndash8
52 Alter H Conry-Cantilena C Melpolder J et al Hepatitis C in asymptomatic
blood donors Hepatology 199726(3 Suppl 1)29Sndash33S
53 Marcellin P Levy S Erlinger S Therapy of hepatitis C patients with normal
aminotransferase levels Hepatology 199726(3 Suppl 1)133Sndash6S
54 Mathurin P Moussalli J Cadranel J et al Slow progression rate of fibrosis in
hepatitis C virus patients with persistently normal alanine transaminase
activity Hepatology 199827868ndash72
55 Graham CS Baden LR Yu E et al Influence of human immunodeficiency
virus infection on the course of hepatitis C virus infection a meta-analysis
Clin Infect Dis 200133562ndash9
56 Soto B Sanchez-Quijano A Rodrigo L et al Human immunodeficiency
virus infection modifies the natural history of chronic parenterally-acquired
hepatitis C with an unusually rapid progression to cirrhosis J Hepatol
1997261ndash5
Received 14 September 2008 accepted 22 December 2008
Cost-effectiveness of HCV-screening 253
Are the best practicesmethodologyresults described applicable in developed countries
Similar cost-effectiveness systematic review can be done However results cannot be generalized to various countries because of treatment costs differences and HCV management screening and treatment
YES NO NA COMMENTS
Are the best practicesmethodologyresults described applicable in developing countries
Studies included in this review originate only from European countries and USA
The research studytooldata dictionary is easily accessedavailable electronically
Purchase required for access at httponlinelibrarywileycom
Is there evidence of cost effective analysis with regard to interventions diagnosis treatment or surveillance methodologies If so what does the evidence say Please go to Comments section
Seven cost-effectiveness studies included in this review
- Incremental cost-effectiveness ratios (ICER) varied depending on the target population study perspective time horizon discount rate and compared strategies
- ICER of HCV screening vs no screening varied from 18300 to 1151000 euroQALY
- Screening in blood recipients not cost-effective given ICER over 140600 euroQALY
- HCV screening was considered cost-effective (ICURs below 40000 euroQALY for treatment with peg-IFN plus RBV) in populations with an elevated HCV prevalence such as intravenous drug users
Are there increased costs (infrastructure manpower skillstraining analysis of data) to using the research studytooldata dictionary
How is the research studytool funded Please got to Comments section
This study was supported in part by Hoffmann La-Roche Ltd Basel Switzerland
Is the best practiceintervention dependent on external funds
Other relevant criteria
Long-term effectiveness
- 5 out of 7 cost-effectiveness studies shown undiscounted life years andor quality-adjusted life years gained for screening and early treatment for HCV compared to no screening and standard care
- Depending on HCV prevalence and risk selection mode the long-term effectiveness of HCV varied from 00004 LYG (015 life-days gained) to 0066 LYG (24 life-days gained) and from 00001 QALY (004 quality adjusted life-days gained) to 0072 QALY (26 quality-adjusted life-days gained)
WITHIN THE SURVEILLANCE SYSTEM FOR REVIEW
Are these data regularly collected
Literature search was limited to March 2007
Are these data regularly collected at andor below a national level
Are these data collected manually or electronically
Electronically searched using databases Medline Cochrane Database of Systematic Reviews Cochrane central register of controlled trials and the NHS databases abstracts of reviews of effects Health technology assessment and Economic evaluation database
RESEARCH REPORTS
Has this research been published in a juried journal
Journal of Viral Hepatitis
Does the evidence utilize the existing datasurveillance information or has it generated new data andor information
Existing data included Health Technology Assessment (HTA) reports systematic reviews long-term clinical trials full health economic and decision-analytic modeling studies
Long-term effectiveness and cost-effectivenessof screening for Hepatitis C virus infection
Gaby Sroczynski1 Eva Esteban1 Annette Conrads-Frank12 Ruth Schwarzer1Nikolai Muhlberger1 Davene Wright2 Stefan Zeuzem3 Uwe Siebert124
Background Hepatitis C virus (HCV) infection is an emerging problem in public health In mostcountries the majority of HCV infected people are yet undiagnosed Early detection and treatmentmay result in better health outcomes and save costs by preventing future advanced liver disease Theevidence for long-term effectiveness and cost-effectiveness of HCV screening was systematicallyreviewed Methods We performed a systematic literature search on long-term health-economic effectsof HCV screening and included Health Technology Assessment (HTA) reports systematic reviewslong-term clinical trials full health economic and decision-analytic modelling studies with a sufficientlylong time horizon and patient-relevant long-term outcomes such as life-years gained (LYG) or quality-adjusted life years (QALY) gained Economic results were converted to 2005 Euros Results Seven studieswere included Target population HCV prevalence study perspective discount rate screening andantiviral treatment mode varied The incremental effectiveness of HCV screening and early treatmentcompared to no screening and standard care varied from 00004 to 0066 LYG and from 00001 to 0072QALY Incremental cost-effectiveness and cost-utility ratios of HCV screening vs no screening were3900ndash243 700ELYG and 18 300ndash1 151 000EQALY HCV screening seems to be cost-effective inpopulations with high HCV prevalence but not in low HCV prevalence populations Conclusions HCVscreening and early treatment have the potential to improve average life-expectancy but should focuson populations with elevated HCV prevalence to be cost-effective Further research on the long-termhealth-economic impact of HCV screening when combined with appropriate monitoring strategiesin different European health care systems is needed
Keywords chronic hepatitis C cost effectiveness screening
Introduction
Chronic Hepatitis C (CHC) is an emerging problem inpublic health In Europe the Hepatitis C virus (HCV)
infection affects gt 1 of the population with a HCV-incidenceof 86100 00012 HCV prevalence differs considerably acrosscountries and risk groups3 The highest HCV prevalence(36ndash81) is currently found in intravenous drug users(IDUs)1
The majority of HCV-infected people progress to chronicdisease4 Approximately 15ndash20 of CHC cases developcirrhosis within 20ndash30 years5ndash12 which is associated with ahigh risk for advanced liver disease quality of life impairmentreduced life expectancy and high treatment costs CHC isconsidered to be the leading cause of liver cancer and livertransplantation in Europe13
Screening for CHC clearly fulfils the general criteriafor population screening1415 and may help to identify
HCV-infected patients in an early stage of the disease(eg mild chronic hepatitis without fibrosis) so that theycan be adequately monitored and treated Moreover it hasbeen reported that it may be cost-effective to treat patientsdiagnosed with mild disease1617 Furthermore for the majorityof acute HCV cases which present no symptoms earlytreatment and for symptomatic acute HCV cases watchfulwaiting may be currently the most effective and cost-effectivestrategies18 Thus early detection and early treatment mayhave the potential to result in better health outcomes and tosave costs by preventing future advanced liver disease Anotherimportant reason to identify unaware HCV-infected persons isto prevent further HCV-transmission using appropriateinterventions to change behaviour leading to HCV transmis-sion (eg needle sharing)However currently most European countries lack specific
policies for HCV screening Only few European countriesperform HCV screening in special subpopulations withelevated HCV prevalence But even in these cases the recom-mendations and medical practices are heterogeneous19ndash21
In March 2007 the European Parliament called for EU-wideaction on Hepatitis C by formally adopting the WrittenDeclaration on Hepatitis C22 Specifically the EuropeanParliament calls for a council recommendation on HepatitisC screening to ensure early diagnosis and wider access totreatment and care within the member states Furthermore theEuropean Liver Patients Association (ELPA) strongly suggeststhat the European Union should encourage tailored screeningcampaigns that target people in at-risk groups23
Despite all potential benefits HCV screening may havesubstantial health-economic consequences and it is not clearwhether it leads to improved long-term health outcomesbecause not all CHC patients will develop progressive liverdisease in their lifetime and not all CHC patients benefitfrom antiviral treatment162425 Furthermore current antiviral
Correspondence Uwe Siebert Department of Public HealthInformation Systems and Health Technology Assessment UMIT ndashUniversity for Health Sciences Medical Informatics and TechnologyEduard Wallnoefer Center I A-6060 Hall iT Austria tel +43-50-8648-3930 fax +43-50-8648-673930 e-mail public-healthumitat
1 Department of Public Health Information Systems and HealthTechnology Assessment UMIT ndash University of Health SciencesMedical Informatics and Technology Hall iT Austria
2 Institute for Technology Assessment and Department of RadiologyMassachusetts General Hospital Harvard Medical School BostonMA USA
3 Department of Internal Medicine Gastroenterology HepatologyPneumology and Endocrinology Johann Wolfgang Goethe-University Frankfurt aM Germany
4 Program in Health Decision Science Department of Health Policyand Management Harvard School of Public Health Boston MAUSA
European Journal of Public Health Vol 19 No 3 245ndash253
The Author 2009 Published by Oxford University Press on behalf of the European Public Health Association All rights reserved
doi101093eurpubckp001 Advance Access published on 5 February 2009
treatment options are costly and impose the burden of sideeffects162425 Therefore a thorough assessment of HCVscreening must consider all consequences for individuals andsociety during a sufficiently long time horizonIn this review we systematically evaluated the current
evidence on long-term effectiveness and cost-effectivenessof screening for Hepatitis C virus infection in differentpopulations
Methods
A systematic literature search was conducted using thedatabases Medline Cochrane Database of SystematicReviews Cochrane central register of controlled trials(CENTRAL) and the NHS databases abstracts of reviews ofeffects (DARE) Health technology assessment (HTA) andEconomic evaluation database (NHS EED) to identify studiesassessing the clinical and economic long-term consequencesof screening for Hepatitis C virus infection (HCV) The timehorizon of the literature search was limited to March 2007 Allreferences were imported into a literature database usinga literature management software program (EndNote 90Thomson ResearchSoft TM Thomson Corporation StamfordCT USA)First reference titles and abstracts were screened for
relevant articles In a second step studies were selected basedon a priori inclusion and exclusion criteria after reading thefull text document We included health technology assessment(HTA) reports systematic reviews long-term clinical trialsfull health economic studies and decision-analytic modellingstudies assessing the impact of screening for Hepatitis C virusinfections As clinical and economic consequences of screeningoccur over a long time horizon we only included studies thatreported both long-term effectiveness and cost effectiveness interms of life-years gained (LYG) quality-adjusted life-yearsgained (QALY) lifetime cost per life-year gained (CostLYG)or cost per quality-adjusted life-year gained (CostQALY)We excluded studies in languages other than English orGerman editorials letters abstracts unsystematic reviewsstudies reporting only short-term effectiveness data (egsustained virological response SVR) studies assessing screen-ing of blood donations or serological testing during antiviraltreatment We also excluded studies that did not reportsufficient data to derive incremental effectiveness and cost-effectiveness ratios or cost-effectiveness studies reporting onlycosts per HCV case detectedWe systematically extracted the results from the publications
and summarized the information in evidence tables reportingclinical and economic outcomesIf necessary and possible we recalculated the incremental
cost-effectiveness ratios (ICER) or incremental cost-utilityratios (ICUR) from the data reported in the publicationTo facilitate comparison across countries and to enable othercountries to transfer our results into their currencies all costswere converted to 2005 Euro (E) using gross domestic productpurchasing power parities (GDPPP) (conversion to Euro ofthe index year) and the German Consumer Price Index(CPI) (inflation to the year 2005)2627 Germany was used asthe reference country for the cost conversion because it is thecountry with the largest population in Europe28
Results
Literature search
A total of 127 unique references were retrieved Tenpublications2029ndash37 including two HTA reports 2036 assessing
lifetime health effects and costs of screening for Hepatitis Cmet the inclusion criteria No long-term clinical trial assessingthe long-term effectiveness (eg mortality) of screening forHepatitis C virus infection and early HCV-treatment wasidentifiedTwo publications by Stein et al3334 reported the cost-
effectiveness results of a decision-analytic model performedwithin an HTA report conducted by the National Institute forHealth and Clinical Excellence (NICE)20 Thompson Coonet al37 reported the cost-effectiveness results of a decision-analytic model performed within an HTA report conductedby the NHS RampD HTA Program36 Only the original data fromthe HTA reports were considered leaving seven studiesin the review
Long-term effectiveness
In the absence of clinical trials meta-analyses and healthtechnology assessment reports evaluating the long-termeffectiveness of HCV screening we based our results ondecision-analytic modelling studies that included an analysis oflong-term effectiveness of screening for Hepatitis C virusinfection and early HCV-treatment in terms of undiscountedlife years andor quality-adjusted life years gained comparedto no screening and standard careFive out of seven cost-effectiveness studies reported undis-
counted life years andor quality-adjusted life years gained forscreening and early HCV-treatment compared to no screeningand standard care (table 1)2029303536
The values for life years gained due to screening andearly treatment varied from 00004 LYG (015 life days) forscreening blood recipients to 0066 LYG (241 life days) forscreening all patients assessed for HBV vaccination attendingdrug and alcohol services QALYs varied from no gain forscreening in pregnant women to 0072 QALYs (ie 26 quality-adjusted life days) for screening in patients assessed for HBVvaccination attending drug and alcohol services Screening inpopulations with elevated HCV prevalence (eg IDU) wasmore effective in terms of life-years or QALYs gained Studiesreported 0036ndash0066 LYG (131ndash241 life days) for populationswith 42ndash68 HCV prevalence (0010ndash0072 QALYs37ndash263quality-adjusted life days 32ndash68 HCV prevalence) vs00004ndash0013 LYG (01ndash47 life days) for populations with3ndash16 HCV prevalence (0ndash0022 QALYs0ndash80 quality-adjusted life days 1ndash16 HCV prevalence)
Long-term cost-effectiveness
Health technology assessment reports
Two HTA reports were included One summarizedresults from economic studies evaluating HCV-screeningprogrammes and both HTA reports conducted a cost-effectiveness analysisStein et al 20 systematically reviewed the evidence from
health economic studies evaluating HCV-screening pro-grammes All reviewed studies had methodological limitationsand the results were of limited transferability to the UKcontext Based on their decision-analytic results the authorsconcluded that screening for Hepatitis C in intravenous drugusers in contact with medical services may be moderately cost-effective However the authors recommend interpreting theirresults with caution because of substantial uncertainty aroundthe acceptability of screening the adherence to treatment andthe simple nature of the model General screening in genito-urinary medicine (GUM) clinics is less cost-effective andassociated with greater uncertainty than screening IDUs incontact with medical services
246 European Journal of Public Health
Table
1Lo
ng-term
effectiveness
ofscreeningforhepatitisCundisco
untedlife
years
andorQALY
StudyCountry
Population
HCV
prevalence
()
ScreeningTreatm
ent
Incremental
life
years
(LYG)
Incremental
quality-adjusted
life
years
(QALY
)
Castelnuovo
etal36
Form
erIDUsmeanage37ye
ars
49
Systematicscreeningvsnosystematicscreening(spontaneous
0058
0071
(ThompsonCoonetal37)
Generalpracticemeanage37ye
ars
125
presentationto
screeningpossible)HCV-positive
sreceive
0010
0017
NHSRampD
HTA
Programme
UK
Form
erandcu
rrentIDUsin
generalpracticemean
age37ye
ars
49
treatm
entPegIFN+RBV
0036
0071
Allpatients
assessedforHBVva
ccinationattending
drugandalcoholservicesmeanage37ye
ars
68
0066
0072
Prisoners
atreceptionmeanage37ye
ars
(general
counseling)
16
0013
0022
Prisoners
atreceptionmeanage37ye
ars
(counseling
withIDU
focu
s)
42
0036
0058
JusotandColin30
France
Bloodrecipientslt40ye
ars
3ScreeningwithEIA3aftertransfusiontreatm
entforHCV-positive
s
withKnodellscore
5IFN
vsnoscreening+nomedicaltherapy
00085
na
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3ScreeningwithEIA3aftertransfusiontreatm
entforHCV-positive
s
withKnodellscore
5IFN
vsnoscreening+nomedicaltherapy
00004
na
Bloodrecipients
receivinghigh-volumetransfusions
3ScreeningwithEIA3before
andaftertransfusion(treatm
entsame
asabove
)
00030ndash0
0047a
na
Lealetal29
UK
IDUsin
contact
withdrugservicesmeanagena
60
ScreeningvsnoscreeningHCV-positive
swithmoderate
toseve
re
CHCreceivetreatm
entIFN
na
0015b
Plunkett
etal35
USA
Pregnantwomenmeanage30ye
ars
1Screeningvsnoscreening70
(screened)or20
(unscreened)of
HCV-positive
swithmoderate
CHCreceivetreatm
ent
PegIFN+RBV
na
000011
1Screeningandtreatm
entasabove
plusCaesariandelive
ryna
00001
Stein
etal20
(Stein
etal20033334)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
Screeningvsnoscreening50
ofHCV-positive
swithmoderate
CHCreceivetreatm
entIFN+RBV
na
001003b
NHSRampD
HTA
Programme
UK
Genito-urinary
medicineclinic
attendeesmeanage36ye
ars
15
Screeningvsnoscreening50
ofHCV-positive
swithmoderate
CHCreceivetreatm
entIFN+RBV
na
000047b
aRangereportedin
theoriginalstudyforthefirstseco
ndandthirdye
ar
bCalculatedwithdata
intheoriginalpublication
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 247
Castelnuovo et al36 performed a decision-analytic cost-effectiveness study to evaluate screening (named lsquocase-findingrsquo)in patients attending general medical practice or special drugand alcohol services and in prisoners at reception with a focuson former IDUs Based on their analyses the authorsconcluded that screening in these target populations is likelyto be cost-effective despite some uncertainty around theacceptance of testing and treatment
Cost-effectiveness studies
Seven cost-effectiveness studies evaluating HCV screeningin different population settings were included in our review(table 2) Three studies were conducted in the UK202936 twoin France3032 and two in the USA3135
Studies varied in terms of target population study pers-pective time horizon discount rate and compared strategiesincluding screening and antiviral treatment modeFive studies2030ndash3235 evaluated populations at average risk
for Hepatitis C (HCV prevalence 1ndash38) Of those one studyevaluated HCV screening in asymptomatic average-risk adultsin the USA31 one study examined screening in the generalFrench population32 and another study analysed screening inpregnant women in the USA35 two studies consideredscreening in blood recipients3032 and one in generalGenito-urinary medicine clinic attendees20
Four studies20293236 evaluated the cost-effectiveness ofscreening in different populations at higher risk for HCV(HCV prevalence 7ndash80) Four studies evaluated HCVscreening in populations with a history of IDU in differentsettings20293236 two studies analysed the cost-effectiveness ofgeneral screening in attendees of special medical services2036
and one study evaluated HCV screening in prisoners atreception36
Most studies compared systematic screening (and antiviraltreatment for detected HCV-positives) to non-systematicscreening allowing for the possibility of spontaneouscase detection with subsequent antiviral treatment20313536
The percentage of HCV positives eligible for treatment variedSome studies compared screening and antiviral treatmentfor detected HCV positives to no screening and notreatment293032 The antiviral treatment regimens(interferoninterferon plus ribavirinpeginterferon plusribavirin) and algorithms (eg treat all HCV-positives oronly those with severe liver histology) varied Only threestudies203536 evaluated screening followed by peginterferonplus ribavirin the current recommended standard antiviraltherapy38ndash40
The incremental cost-effectiveness ratios (ICER) of HCVscreening vs no screening varied over a wide range (18 300ndash1 151 000EQALY if not dominated) depending on targetpopulation study perspective time horizon discount rate andcompared strategies including screening mode and antiviraltreatment strategies In summary HCV screening in popula-tions with an average HCV prevalence and in pregnant womenwas dominated by no screening Screening in blood recipientsyielded an ICER over 140 600ELYG and was considerednot to be cost-effective30 However this study had a timehorizon of 30 years instead of lifetime and used interferonmonotherapy as antiviral treatment option In contrast HCVscreening in populations with a high HCV prevalencesuch as current or former intravenous drug users was con-sidered cost-effective HCV screening in current andorformer intravenous drug users yielded discounted incre-mental cost-effectiveness ratios below 46 700EQALY2036
General HCV screening amongst members of specialmedical practices (140 500EQALY)20 or in prisoners atreception (30 200EQALY)36 were associated with higher
cost-effectiveness ratios compared to more targeted screening(eg screening only IDUs in these settings)Figure 1 shows the incremental ICER and ICUR ratios of
screening for different HCV prevalence and different antiviraltreatment strategies Most studies evaluated the ICERsICURsin populations with HCV prevalence above 10 Only fourstudies reported results for populations with a lower HCVprevalence Many studies evaluated screening followed byantiviral treatment with interferon or interferon plus ribavirinwhich are not current standard treatment options anymorePeginterferon plus ribavirin the recommended standardantiviral treatment yields more LYsQALYs gained and resultsin much lower ICERsICURs Therefore figure 1c and d showsICERsICURs for screening followed by treatment withpeginterferon plus ribavirin only The majority of thesestudies reported ICURs below 40 000EQALY gained (ICER50 000ELYG) in populations with HCV prevalence above10 and higher ICURs (77 000ndash1 150 000EQALY gained) inlow HCV prevalence populations (results from two studies)
Discussion
We performed a systematic review on the long-term effective-ness and cost-effectiveness of screening for HCV infectionDepending on HCV prevalence and risk selection mode
the incremental long-term effectiveness of HCV screening andearly treatment compared to no screening and standard carevaried from 00004 LYG (015 life-days gained) to 0066 LYG(24 life-days gained) and from 00001 QALY (004 quality-adjusted life-days gained) to 0072 QALY (26 quality-adjustedlife-days gained) To put these figures into perspective theycan be compared with other screening programs For examplebiennial cervical cancer screening compared to no screening isassociated with a gain of 92 life days Moving from a 2-year toa 1-year interval is associated with a gain of four life days41
Given 1 undetected HIV-prevalence one-time HIVscreening in US health care settings was reported to increaselife-expectancy by 39 days (29 quality-adjusted life days)Screening every 5 years would gain additional 097 days(070 quality-adjusted life days)42
It must be noted that these numbers reflect the averageincremental life expectancy per person screened This trans-lates to many persons with no gain and some persons withseveral years or decades gain in life expectancyThe incremental cost-effectiveness ratios varied over a wide
range depending on target population (eg HCV prevalenceage etc) study perspective time horizon discount rate andcompared strategies including screening settings and antiviraltreatment strategies Therefore the comparability of theresults is limitedHCV screening vs no screening resulted in ICURs ranging
from 18 300 to 1 151 000EQALY if screening was notdominated In the reviewed studies HCV screening wasconsidered cost-effective (ICURs below 40 000EQALY fortreatment with peginterferon plus ribavirin) in populationswith an elevated HCV prevalence such as intravenous drugusers General HCV screening in average-risk adults wasunlikely to be effective and cost-effectiveHowever cost-effectiveness should not be the main criterion
for the decision to implement HCV screening Given thesubstantial number of prevalent iatrogenic HCV-infected casesother ethical concepts such as fairness and equity may beconsidered as wellCost-effectiveness is depending on the willingness-to-pay in
a certain society which depends on several economical socialand political factors There is currently no general agreementacross countries about the cost-effectiveness threshold To givea measurement on the incremental cost-effectiveness ratios of
248 European Journal of Public Health
Table
2Disco
untedincrementalco
st-effectiveness-ratios(ICER)anddisco
untedincrementalco
st-utility-ratios(ICUR)forscreeningforhepatitisC
StudyCountry
CurrencyYear
Perspective
Disco
unt
rate
()
Comparator
TargetPopulation
ICER
(ELYG)
ICUR
(EQ
ALY
)
Castelnuovo
etal36
(ThompsonCoon
UKpound2004
NationalHealth
6(costs)15
(effects)
Systematicscreeningvsnosystematicscreening
(spontaneouspresentationto
screeningpossible)
Form
erIDUsgeneralcasemeanage37ye
ars49
HCV
preva
lence
30232
24858
etal37)
Services(N
HS)
HCV-positive
sreceivetreatm
entPegIFN+RBV
Generalpracticemeanage37ye
ars125
HCVpreva
lence
38633
23321
NHSRampD
HTA
Programme
Form
erandcu
rrentIDUsin
generalpracticemeanage
37ye
ars49
HCV
preva
lence
30194
24827
UK
Allpatients
assessedforHBVva
ccinationattendingdrugand
alcoholservicesmeanage37ye
ars68
HCV
preva
lence
28689
26365
(Screeningincludedgenerallecture
onHCV)
Prisoners
atreceptionmeanage37ye
ars16
HCVpreva
lence
50833
30231
(Screeningincludedlecture
withfocu
sonIDU
andrisk
ofHCV)
Prisoners
atreceptionmeanage37ye
ars42
HCVpreva
lence
40301
24813
JusotandColin30
France
FF1996Health
care
system
30ye
ars
time
Nodisco
unt
rate
ScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipientslt40ye
ars3
HCV
preva
lence
140674
mdash
horizo
nScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3
HCV
preva
lence
477654
mdash
ScreeningwithEIA3before
andaftertransfusion
(treatm
entsameasabove
)
Bloodrecipients
receivinghigh-volumetransfusions
3
HCV
preva
lence
144970
mdash
Lealetal29
UKpound1997na
6ScreeningvsnoscreeningHCV-positive
swithmoderate
IDUsin
contact
withdrugservices60
HCV
preva
lence
mdash119754
UK
toseve
reCHCreceivetreatm
entIFN
(IFN
+RBV)
(18267-34537a)
Loubiere
etal32
France
E1998Health
care
system
3ScreeningwithEIA3+EIA3vsnoscreening+notreatm
ent
50
ofCHCcasesand40
ofcirrhosiscasesreceive
treatm
entIFN+RBV
IDUs80
HCV
preva
lence
3881
mdash
ScreeningwithEIA3+PCRvsnoscreening+notreatm
ent
treatm
entasabove
9742
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
Patients
transfusedbefore
19917
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
243737
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
GeneralFrench
population12
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
5005
mdash
Plunkett
etal35
USA
US$
2003Health
care
system
3ScreeningvsnoscreeningHCV-positive
sreceivetreatm
ent
PegIFN+RBV
Pregnantwomen1
HCV
preva
lence
mdashNoscreening
dominant
Asabove
plusCaesariandelive
rymdash
1150976
Singeretal31
USA
US$
2001S
ocietal
3Screeningvsnoscreening20
ofHCV-positive
sreceive
treatm
entIFN+RBV
Asymptomatic
ave
ragerisk
adultsmeanage35ye
ars
38
HCV
preva
lence
mdashNoscreening
dominant
Stein
etal20
(Stein
etal3334)
UKpound2001
NationalHealth
6(costs)15
(effects)
Screeningvsnoscreening50
ofHCV-positive
swith
moderate
CHCreceivetreatm
entIFN+RBV(PegIFN+RBV)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
HCV
preva
lence
mdash46707(23598)
NHSRampD
HTA
Programme
Services(N
HS)
Allscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV(PegIFN+RBV)
Genito-urinary
medicineclinic
attendeesmeanage
36ye
ars15
HCVpreva
lence
mdash140471(77052)
UK
IDUsscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV
32
HCVpreva
lence
mdash45076
aDependingontreatm
entduration(24or48weeks)
andribavirindosage(1000or1200mgd)
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 249
well-accepted screening programs cytological screening forcervical cancer every 3 years compared to no screening costspound1800 per life year gained in the UK43 1400ELYG inGermany44 and 8400 US$LYG in the USA45 Screening blooddonors for HIV costs 14 000 US$LYG46 Given 1 undetectedHIV-prevalence one-time HIV screening in US health caresettings would result in 41 700 US$QALY screening every 5years 123 600 US$QALY42
In the absence of long-term clinical trials all results wereretrieved from decision-analytic studies which link diagnosticand clinical short-term outcomes (eg test sensitivity andspecificity or viral response) to clinical long-term outcomes(eg mortality and long-term quality of life)47 The includedstudies were heterogeneous in regard to health economicanalysis techniques (eg time horizons discounting etc)HCV population prevalence acquisition risk factors andantiviral therapy Therefore the outcomes in terms of lifeyears gained quality adjusted life years and incremental costeffectiveness ratios varied over a wide range However severalresults were logical and predictable for example screening ismore cost effective in higher prevalence or higher riskpopulationsmdasha result that has been reported for other diseasestoo4849
Like all decision-analytic models screening models mustsimplify the real world for more transparency and thepossibility to analyse specific research questions47 However
some methodological and structural model assumptions mayhave an important impact on clinical and economic outcomesand could lead to bias in favour for or against HCV screeningThus it is important to discuss some aspects essential fora valuable screening modelFirst it is important to allow for the possibility of
spontaneous case detection by symptoms with subsequentantiviral treatment in the non-screening strategy of any HCV-screening model Without these estimates the benefits of thescreening strategy are overestimated and outcomes are biasedin favour of the HCV-screening strategy Second the settingof antiviral treatment in both strategies is very important Notreatment in the non-screening strategy or lsquowait and treatcirrhosisrsquo vs lsquoscreen and treat all HCV-positive patientsrsquomay overestimate both the incremental benefits and costs ofscreening Therefore antiviral treatment should be consideredfor chronic HCV-patients (detected through screeningsymptoms or spontaneous presentation) in both strategiesaccording to recent treatment guidelines Third moststudies considered antiviral therapy with interferon plusribavirin20293132 and two studies used even interferonmonotherapy293032 Only three studies considered peginter-feron plus ribavirin203536 Having better treatment optionsand administering antiviral treatment according to genotype-specific guidelines with early treatment stop for patients notresponding would allow tailoring treatment efficiently which
Figure 1 Incremental cost-effectiveness ratio of screening compared to no screening in Euro per life year gained (EuroLYG) orquality-adjusted life-year gained (EuroQALY) for different HCV prevalence in the target population (a) ICER (in EuroLYG) ofHCV screening and different antiviral treatment (b) ICUR (in EuroQALY) of HCV screening and different antiviral treatment (c)ICER (in EuroLYG) of HCV screening and antiviral treatment with peginterferon plus ribavirin (d) ICUR (in EuroQALY) of HCVscreening and antiviral treatment with peginterferon plus ribavirin (Each point represents the ICERICUR of a specific targetpopulation and screeningtreatment strategy Multiple points may come from the same modelling study) IFN= interferonRBV= ribavirin PegIFN=peginterferon One point out of range of figure 1(d) 1 150 976QALY with 1 HCV prevalencePegIFN+RBV
250 European Journal of Public Health
would reduce adverse effects harms and antiviral treatmentcosts and improve the cost-effectiveness of HCV screening dueto better clinical and economic outcomes Fourth eligibilityof patients for and adherence to antiviral treatment shouldbe considered In particular any HCV-screening modelshould consider a lsquowait and seersquo strategy in the screeningarm because not all patients necessarily should or want to betreated immediately after HCV detection50 HCV screeningand watchful monitoring HCV-infected patients may be moreeffective and cost-effective than screening with immediatetreatment of all HCV-infected patients since a fraction ofHCV-infected patients may not develop fibrosis or cirrhosisduring their lifetime This is particularly important for theelderlyThe age at which HCV-infected patients are identified and
treated is a very important modelling factor as well Moststudies used an average age of 40 years for the evaluatedpopulation which may be adequate for patients with CHCwhich already developed symptoms However HCV screeningmay detect HCV-infected individuals earlier at significantlyyounger age In addition certain HCV-infected populationsat risk for advanced liver disease such as intravenous druguser or ethnic minority groups who have acquired HCViatrogenically in early childhood have a significantly youngeraverage age Thus in these cases benefits from early detectionand treatment may be underestimatedDiscounting costs and effects is important and affects ICERs
since the clinical and economic benefits of screening due toavoided cirrhosis and its sequelae occur in the distant futurewhereas the costs of screening and antiviral treatment occurmuch earlier One study30 in France did not discount at all andtwo studies 2036 conducted in the UK used different discountrates for costs and effects The ICERs increased significantly insensitivity analyses when cost and effects were equallydiscounted with 35 annually (eg from 16 514 poundQALY to33 235 poundQALY36)Most studies used a lifelong time horizon for their analyses
which is the most adequate timeframe to use As benefits thatoccur far in the future will not be considered within shortertime horizons estimated cost-effectiveness ratios may be toohigh One study used a 30 year time horizon30 As cirrhosisand its complications develop slowly within 10ndash30 years eventhis time horizon may be too short and benefits may beunderestimatedAll studies included in this review take into account the
natural history of chronic Hepatitis C disease progression andmortality from CHC-related complications Only one studyused the natural history of chronic Hepatitis B diseaseprogression as at that time no information existed regardingHepatitis C progression However it was not always clearwhether slower progression rates were considered for screenedpopulations tending to present histological milder Hepatitis Ccompared to non-screened populations mostly detected bysymptoms Several studies reported that patients with mildCHC and normal ALT levels may have a reduced risk ofprogression to cirrhosis compared to patients with more severehistology or elevated ALT levels751ndash54 Furthermore analysesfor CHC patients co-infected with HIV should assume higherprogression rates to CHC-related liver diseases than analysesin non-co-infected CHC patients5556In addition most studies used age- and gender-specific
mortality rates of the general population for the backgroundmortality for CHC patients However background mortality isoften higher due to co-morbidity from other diseases such asHIV- or HBV-coinfection or in case of IDUs from continua-tion of or relapse to drug abuse Even patients with moderateCHC or cirrhosis that respond to antiviral treatment continue
to have an increased risk of developing hepatocellularcarcinoma which is associated with significant mortalityOverall this review discovered many study limitations and
the need for further systematic research in HCV screeningParticularly health-economic studies in population with lowor average HCV prevalence evaluating HCV screeningcombined with different strategies of monitoring and antiviraltreatment of HCV-positives according to current treatmentstandard are requiredFinally it must be mentioned that due to different
epidemiology health care systems disease managementpractice patterns and treatment costs in different Europeancountries results cannot be generalized and are difficult if notimpossible to be directly transferred from one country toanother Further research should focus on the development ofa Pan-European Hepatitis C screening model that fulfils thequality criteria discussed above and which can be adapted tothe context of the different health care systems and countrieswithin Europe
Conclusion
Although HCV screening fulfils general population screeningcriteria specific well-formulated national programs forHepatitis C screening are lacking in most European countriesBased on current evidence HCV screening and early treatmenthas the potential to improve average life-expectancy butshould focus on populations with elevated HCV prevalence tobe cost-effective Further research is needed to investigate thelong-term health-economic impact of HCV screening whencombined with appropriate monitoring and treatmentstrategies in different European health care systems Furtherassessments should focus on determining optimal targetgroups and settings that yield effective and cost-effectiveHCV screening strategies
Acknowledgements
We thank the members of the PanEuropean Hepatitis C ExpertPanel for providing local information and reviewing the resultsof our study Maria Buti MD Hospital General UniversitarioVall de Hebron Barcelona Spain Florin Caruntu Matei BalsInfectious Disease Institute Bucharest and Carol DavilaMedicine and Pharmacy University Bucharest RomaniaCharles Gore The Hepatitis C Trust London UK Scott DHolmberg MD MPH Epidemiology and Surveillance BranchDivision of Viral Hepatitis Prevention NCHHSTP Centers forDisease Control and Prevention Atlanta GA USA NadinePiorkowsky The European Liver Patients Association (ELPA)Germany Prof William Rosenberg Institute of HepatologyUniversity College London UK However the authors aloneare responsible for the results reported and views expressed inthe paper The authors had complete and independent controlover study design analysis and interpretation of data reportwriting and publication regardless of results
Funding
This project was supported in part by an unrestrictededucational grant from Hoffmann La-Roche Ltd BaselSwitzerland
Conflicts of interest NM has received travel support fromHoffmann La-Roche Ltd to present preliminary results of thestudy to different audiences US has received healthtechnology assessment research grants from the GermanFederal Ministry of Health and the Austrian Academy of
Cost-effectiveness of HCV-screening 251
Sciences and unrestricted research grants from ScheringPlough and Roche
Key points
Although HCV screening fulfils general populationscreening criteria specific well-formulated nationalpublic health programs for hepatitis C screening arelacking in most European countries
According to this review HCV screening with earlytreatment has the potential to improve averagelife-expectancy but should focus on populationswith elevated HCV prevalence to be cost-effectiveAppropriate target groups could be selected based onrisk factor profiles
Appropriate monitoring and treatment strategiesfor detected early disease may improve the cost-effectiveness of HCV screening
In view of the multitude of iatrogenic infectionshowever cost-effectiveness may not be the onlydecision criterion for the implementation of HCVscreening Aspects like fairness might be considered aswell
Further research should focus on the public-healthimpact of HCV screening when combined withappropriate monitoring and treatment strategies andon determining optimal target groups and settings
References
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Kretzschmar M et al editors Hepatitis C and injecting drug use
Luxembourg European Monitoring Centre for Drugs and Drug Addiction
2006 91ndash135
2 European Centre for Disease Prevention and Control (ECDC) Annual
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wwwecdceuropaeu (date last accessed 28 June 2007)
3 Rantala M van de Laar MJ Surveillance and epidemiology of hepatitis B and
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4 Alter H Seeff L Recovery persistence and sequelae in hepatitis C virus
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20002017ndash35
5 Anonymous EASL international consensus conference on hepatitis C
Paris 26ndash27 February 1999 Consensus statement J Hepatol
199931(Suppl 1)3ndash8
6 Dore GJ Freeman AJ Law M Kaldor JM Is severe liver disease a common
outcome for people with chronic hepatitis C J Gastroenterol Hepatol
200217423ndash30
7 Freeman A Dore G Law M et al Estimating progression to cirrhosis in
chronic hepatitis C virus infection Hepatology 200134809ndash16
8 Freeman AJ Law MG Kaldor JM Dore GJ Predicting progression
to cirrhosis in chronic hepatitis C virus infection J Viral Hepat
200310285ndash93
9 Hopf U Moller B Kuther D et al Long-term follow-up of posttransfusion
and sporadic chronic hepatitis non-A non-B and frequency of circulating
antibodies to hepatitis C virus (HCV) J Hepatol 19901069ndash76
10 Koretz R Abbey H Coleman E Gitnick G Non-A non-B post-transfusion
hepatitis Looking back in the second decade Ann Intern Med
1993119110ndash5
11 Mattsson L Outcome of acute symptomatic non-A non-B hepatitis
a 13-year follow-up study of hepatitis C virus markers Liver
199313274ndash8
12 Tremolada F Casarin C Alberti A et al Long-term follow-up of non-A
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13 World Health Organization (WHO) Global surveillance and control of
hepatitis C Report of a WHO consultation organized in collaboration with
the Viral Hepatitis Prevention Board Antwerp Belgium J Viral Hepatitis
1999635ndash47
14 Wilson J Jungner Y Principles and practice of mass screening for disease
Bol Oficina Sanit Panam 196865281ndash393
15 Wilson J The evaluation of the worth of early disease detection J R Coll Gen
Pract 196816(Suppl 2)48ndash57
16 Brady B Siebert U Sroczynski G et al Pegylated interferon combined with
ribavirin for chronic hepatitis C virus infection an economic evaluation
[Technology Report No 82] Ottawa Canadian Agency for Drugs and
Technologies in Health 2007
17 Wright M Grieve R Roberts J Main J Thomas HC on behalf of the UK
Mild Hepatitis C Trial Investigators Health benefits of antiviral therapy for
mild chronic hepatitis C randomised controlled trial and economic
evaluation Health Technol Assess 2006101ndash132
18 Maheshwari A Ray S Thuluvath PJ Acute hepatitis C Lancet
2008372321ndash32
19 Jullien-Depradeux AM Bloch J Le Quellec-Nathan M Abenhaim A
National campaign against hepatitis C in France (1999ndash2002) Acta
Gastroenterol Belg 200265112ndash4
20 Stein K Dalziel K Walker A et al Screening for hepatitis C among injecting
drug users and in genitourinary medicine clinics systematic reviews of
effectiveness modelling study and national survey of current practice
Health Technol Assess 200261ndash122
21 Department of HealthGeneral Health Protection Hepatitis C Action Plan
for England July 2004 Available at wwwdhgovukpublications (date last
accessed 12 November 2006
22 European Liver Patient Association (ELPA) European Parliament demands
EU-wide action on Hepatitis C 2007 httpwwwelpaorg (date last accessed
15 May 2007)
23 European Liver Patient Association (ELPA) Promoting Hepatitis C Screening
in Europe 2007 httpwwwelpaorg (date last accessed 8 May 2008)
24 Shepherd J Brodin HFT Cave CB et al Clinical- and cost-effectiveness of
pegylated interferon alfa in the treatment of chronic hepatitis C a systematic
review and economic evaluation Int J Technol Assess Health Care
20052147ndash54
25 Siebert U Sroczynski G on behalf of the German Hepatitis C Model
(GEHMO) Group and the HTA Expert Panel on Hepatitis C Antiviral
therapy for patients with chronic hepatitis C in Germany Evaluation of
effectiveness and cost-effectiveness of initial combination therapy with
InterferonPeginterferon plus Ribavirin Series of the German Institute for
Medical Documentation and Information commissioned by the Federal
Ministry of Health and Social Security Cologne DIMDI 2003
26 Organisation for Economic Co-operation and Development (OECD) Gross
domestic product purchasing power parities 2006 httpwwwoecdorg
27 German Federal Statistical Office German Consumer Price Index (CPI) 2006
httpwwwdestatisde
28 Population Division of the Department of Economic and Social Affairs of the
United Nations Secretariat World population prospects the 2006 revision and
world urbanization prospects the 2005 revision httpesaunorgunpp
29 Leal P Stein K Rosenberg W What is the cost utility of screening for
hepatitis C virus (HCV) in intravenous drug users J Med Screen
19996124ndash31
30 Jusot JF Colin C Cost-effectiveness analysis of strategies for hepatitis C
screening in French blood recipients Eur J Public Health 200111373ndash9
31 Singer ME Younossi ZM Cost effectiveness of screening for hepatitis C virus
in asymptomatic average-risk adults Am J Med 2001111614ndash21
32 Loubiere S Rotily M Moatti JP Prevention could be less cost-effective than
cure the case of hepatitis C screening policies in France Int J Technol Assess
Health Care 200319632ndash45
33 Stein K Dalziel K Walker A et al Screening for hepatitis C in genito-urinary
medicine clinics a cost utility analysis J Hepatol 200339814ndash25
34 Stein K Dalziel K Walker A et al Screening for Hepatitis C in injecting drug
users a cost utility analysis J Public Health 20042661ndash71
252 European Journal of Public Health
35 Plunkett BA Grobman WA Routine hepatitis C virus screening in
pregnancy a cost-effectiveness analysis Am J Obstet Gynecol
20051921153ndash61
36 Castelnuovo E Thompson-Coon J Pitt M et al The cost-effectiveness of
testing for hepatitis C in former injecting drug users Health Technol Assess
200610 iiindashiv ixndashxii 1ndash93
37 Thompson Coon J Castelnuovo E Pitt M et al Case finding for hepatitis C
in primary care a cost utility analysis Fam Pract 200623393ndash406
38 Sherman M Shafran S Burak K et al Management of chronic hepatitis C
consensus guidelines Can J Gastroenterol 200721(Suppl C)25Cndash34C
39 NIH Consensus Statement National institutes of health consensus devel-
opment conference management of Hepatitis C 2002 - June 10ndash12 2002
Hepatology 200236(5 Suppl 1)S3ndash20
40 Zeuzem S Standard treatment of acute and chronic hepatitis C
Z Gastroenterol 200442714ndash9
41 Siebert U Sroczynski G Hillemanns P et al The German cervical cancer
screening model development and validation of a decision-analytic model
for cervical cancer screening in Germany Eur J Public Health
200616185ndash92
42 Sanders G Bayoumi A Sundaram V et al Cost-effectiveness of screening for
HIV in the era of highly active antiretroviral therapy N Engl J Med
2005352570ndash85
43 Payne N Chilcott J McGoogan E Liquid-based cytology in cervical
screening a rapid and systematic review Health Technol Assess 200041ndash73
44 Siebert U Muth C Sroczynski G et al Liquid-based preparation and
computer-assisted examination of cervical smears in cervical cancer screening
Clinical effectiveness economic evaluation and systematic decision analysis
Series of the German Institute for Medical Documentation and Information
commissioned by the Federal Ministry of Health and Social Security St
Augustin Asgard 2004
45 McCrory DC Matchar DB Evaluation of cervical cytology - systematic
review HTA Report Agency for Health Care Research and Quality (AHRQ)
Report No 5 1999
46 Tengs T Adams M Pliskin J et al Five-hundred life-saving interventions
and their cost-effectiveness Risk Anal 199515369ndash90
47 Siebert U When should decision-analytic modeling be used in the
economic evaluation of health care [Editorial] Eur J Health Econ
20034143ndash50
48 Shamir R Hernell O Leshno M Cost-effectiveness analysis of
screening for celiac disease in adult population Med Decis Making
200626282ndash93
49 Hayashino Y Shimbo T Tsujii S et al Cost-effectiveness of coronary artery
disease screening in asymptomatic patients with type 2 diabetes and other
atherogenic risk factors in Japan factors influencing on international
application of evidence-based guidelines Int J Cardiol 200711888ndash96
50 Wong JB Koff RS Watchful waiting with periodic liver biopsy versus
immediate empirical therapy for histologically mild chronic hepatitis C A
cost-effectiveness analysis Ann Intern Med 2000133665ndash75
51 Alberti A Morsica G Chemello L et al Hepatitis C viremia and liver
disease in symptom-free individuals with anti-HCV Lancet
1992340697ndash8
52 Alter H Conry-Cantilena C Melpolder J et al Hepatitis C in asymptomatic
blood donors Hepatology 199726(3 Suppl 1)29Sndash33S
53 Marcellin P Levy S Erlinger S Therapy of hepatitis C patients with normal
aminotransferase levels Hepatology 199726(3 Suppl 1)133Sndash6S
54 Mathurin P Moussalli J Cadranel J et al Slow progression rate of fibrosis in
hepatitis C virus patients with persistently normal alanine transaminase
activity Hepatology 199827868ndash72
55 Graham CS Baden LR Yu E et al Influence of human immunodeficiency
virus infection on the course of hepatitis C virus infection a meta-analysis
Clin Infect Dis 200133562ndash9
56 Soto B Sanchez-Quijano A Rodrigo L et al Human immunodeficiency
virus infection modifies the natural history of chronic parenterally-acquired
hepatitis C with an unusually rapid progression to cirrhosis J Hepatol
1997261ndash5
Received 14 September 2008 accepted 22 December 2008
Cost-effectiveness of HCV-screening 253
Is the best practiceintervention dependent on external funds
Other relevant criteria
Long-term effectiveness
- 5 out of 7 cost-effectiveness studies shown undiscounted life years andor quality-adjusted life years gained for screening and early treatment for HCV compared to no screening and standard care
- Depending on HCV prevalence and risk selection mode the long-term effectiveness of HCV varied from 00004 LYG (015 life-days gained) to 0066 LYG (24 life-days gained) and from 00001 QALY (004 quality adjusted life-days gained) to 0072 QALY (26 quality-adjusted life-days gained)
WITHIN THE SURVEILLANCE SYSTEM FOR REVIEW
Are these data regularly collected
Literature search was limited to March 2007
Are these data regularly collected at andor below a national level
Are these data collected manually or electronically
Electronically searched using databases Medline Cochrane Database of Systematic Reviews Cochrane central register of controlled trials and the NHS databases abstracts of reviews of effects Health technology assessment and Economic evaluation database
RESEARCH REPORTS
Has this research been published in a juried journal
Journal of Viral Hepatitis
Does the evidence utilize the existing datasurveillance information or has it generated new data andor information
Existing data included Health Technology Assessment (HTA) reports systematic reviews long-term clinical trials full health economic and decision-analytic modeling studies
Long-term effectiveness and cost-effectivenessof screening for Hepatitis C virus infection
Gaby Sroczynski1 Eva Esteban1 Annette Conrads-Frank12 Ruth Schwarzer1Nikolai Muhlberger1 Davene Wright2 Stefan Zeuzem3 Uwe Siebert124
Background Hepatitis C virus (HCV) infection is an emerging problem in public health In mostcountries the majority of HCV infected people are yet undiagnosed Early detection and treatmentmay result in better health outcomes and save costs by preventing future advanced liver disease Theevidence for long-term effectiveness and cost-effectiveness of HCV screening was systematicallyreviewed Methods We performed a systematic literature search on long-term health-economic effectsof HCV screening and included Health Technology Assessment (HTA) reports systematic reviewslong-term clinical trials full health economic and decision-analytic modelling studies with a sufficientlylong time horizon and patient-relevant long-term outcomes such as life-years gained (LYG) or quality-adjusted life years (QALY) gained Economic results were converted to 2005 Euros Results Seven studieswere included Target population HCV prevalence study perspective discount rate screening andantiviral treatment mode varied The incremental effectiveness of HCV screening and early treatmentcompared to no screening and standard care varied from 00004 to 0066 LYG and from 00001 to 0072QALY Incremental cost-effectiveness and cost-utility ratios of HCV screening vs no screening were3900ndash243 700ELYG and 18 300ndash1 151 000EQALY HCV screening seems to be cost-effective inpopulations with high HCV prevalence but not in low HCV prevalence populations Conclusions HCVscreening and early treatment have the potential to improve average life-expectancy but should focuson populations with elevated HCV prevalence to be cost-effective Further research on the long-termhealth-economic impact of HCV screening when combined with appropriate monitoring strategiesin different European health care systems is needed
Keywords chronic hepatitis C cost effectiveness screening
Introduction
Chronic Hepatitis C (CHC) is an emerging problem inpublic health In Europe the Hepatitis C virus (HCV)
infection affects gt 1 of the population with a HCV-incidenceof 86100 00012 HCV prevalence differs considerably acrosscountries and risk groups3 The highest HCV prevalence(36ndash81) is currently found in intravenous drug users(IDUs)1
The majority of HCV-infected people progress to chronicdisease4 Approximately 15ndash20 of CHC cases developcirrhosis within 20ndash30 years5ndash12 which is associated with ahigh risk for advanced liver disease quality of life impairmentreduced life expectancy and high treatment costs CHC isconsidered to be the leading cause of liver cancer and livertransplantation in Europe13
Screening for CHC clearly fulfils the general criteriafor population screening1415 and may help to identify
HCV-infected patients in an early stage of the disease(eg mild chronic hepatitis without fibrosis) so that theycan be adequately monitored and treated Moreover it hasbeen reported that it may be cost-effective to treat patientsdiagnosed with mild disease1617 Furthermore for the majorityof acute HCV cases which present no symptoms earlytreatment and for symptomatic acute HCV cases watchfulwaiting may be currently the most effective and cost-effectivestrategies18 Thus early detection and early treatment mayhave the potential to result in better health outcomes and tosave costs by preventing future advanced liver disease Anotherimportant reason to identify unaware HCV-infected persons isto prevent further HCV-transmission using appropriateinterventions to change behaviour leading to HCV transmis-sion (eg needle sharing)However currently most European countries lack specific
policies for HCV screening Only few European countriesperform HCV screening in special subpopulations withelevated HCV prevalence But even in these cases the recom-mendations and medical practices are heterogeneous19ndash21
In March 2007 the European Parliament called for EU-wideaction on Hepatitis C by formally adopting the WrittenDeclaration on Hepatitis C22 Specifically the EuropeanParliament calls for a council recommendation on HepatitisC screening to ensure early diagnosis and wider access totreatment and care within the member states Furthermore theEuropean Liver Patients Association (ELPA) strongly suggeststhat the European Union should encourage tailored screeningcampaigns that target people in at-risk groups23
Despite all potential benefits HCV screening may havesubstantial health-economic consequences and it is not clearwhether it leads to improved long-term health outcomesbecause not all CHC patients will develop progressive liverdisease in their lifetime and not all CHC patients benefitfrom antiviral treatment162425 Furthermore current antiviral
Correspondence Uwe Siebert Department of Public HealthInformation Systems and Health Technology Assessment UMIT ndashUniversity for Health Sciences Medical Informatics and TechnologyEduard Wallnoefer Center I A-6060 Hall iT Austria tel +43-50-8648-3930 fax +43-50-8648-673930 e-mail public-healthumitat
1 Department of Public Health Information Systems and HealthTechnology Assessment UMIT ndash University of Health SciencesMedical Informatics and Technology Hall iT Austria
2 Institute for Technology Assessment and Department of RadiologyMassachusetts General Hospital Harvard Medical School BostonMA USA
3 Department of Internal Medicine Gastroenterology HepatologyPneumology and Endocrinology Johann Wolfgang Goethe-University Frankfurt aM Germany
4 Program in Health Decision Science Department of Health Policyand Management Harvard School of Public Health Boston MAUSA
European Journal of Public Health Vol 19 No 3 245ndash253
The Author 2009 Published by Oxford University Press on behalf of the European Public Health Association All rights reserved
doi101093eurpubckp001 Advance Access published on 5 February 2009
treatment options are costly and impose the burden of sideeffects162425 Therefore a thorough assessment of HCVscreening must consider all consequences for individuals andsociety during a sufficiently long time horizonIn this review we systematically evaluated the current
evidence on long-term effectiveness and cost-effectivenessof screening for Hepatitis C virus infection in differentpopulations
Methods
A systematic literature search was conducted using thedatabases Medline Cochrane Database of SystematicReviews Cochrane central register of controlled trials(CENTRAL) and the NHS databases abstracts of reviews ofeffects (DARE) Health technology assessment (HTA) andEconomic evaluation database (NHS EED) to identify studiesassessing the clinical and economic long-term consequencesof screening for Hepatitis C virus infection (HCV) The timehorizon of the literature search was limited to March 2007 Allreferences were imported into a literature database usinga literature management software program (EndNote 90Thomson ResearchSoft TM Thomson Corporation StamfordCT USA)First reference titles and abstracts were screened for
relevant articles In a second step studies were selected basedon a priori inclusion and exclusion criteria after reading thefull text document We included health technology assessment(HTA) reports systematic reviews long-term clinical trialsfull health economic studies and decision-analytic modellingstudies assessing the impact of screening for Hepatitis C virusinfections As clinical and economic consequences of screeningoccur over a long time horizon we only included studies thatreported both long-term effectiveness and cost effectiveness interms of life-years gained (LYG) quality-adjusted life-yearsgained (QALY) lifetime cost per life-year gained (CostLYG)or cost per quality-adjusted life-year gained (CostQALY)We excluded studies in languages other than English orGerman editorials letters abstracts unsystematic reviewsstudies reporting only short-term effectiveness data (egsustained virological response SVR) studies assessing screen-ing of blood donations or serological testing during antiviraltreatment We also excluded studies that did not reportsufficient data to derive incremental effectiveness and cost-effectiveness ratios or cost-effectiveness studies reporting onlycosts per HCV case detectedWe systematically extracted the results from the publications
and summarized the information in evidence tables reportingclinical and economic outcomesIf necessary and possible we recalculated the incremental
cost-effectiveness ratios (ICER) or incremental cost-utilityratios (ICUR) from the data reported in the publicationTo facilitate comparison across countries and to enable othercountries to transfer our results into their currencies all costswere converted to 2005 Euro (E) using gross domestic productpurchasing power parities (GDPPP) (conversion to Euro ofthe index year) and the German Consumer Price Index(CPI) (inflation to the year 2005)2627 Germany was used asthe reference country for the cost conversion because it is thecountry with the largest population in Europe28
Results
Literature search
A total of 127 unique references were retrieved Tenpublications2029ndash37 including two HTA reports 2036 assessing
lifetime health effects and costs of screening for Hepatitis Cmet the inclusion criteria No long-term clinical trial assessingthe long-term effectiveness (eg mortality) of screening forHepatitis C virus infection and early HCV-treatment wasidentifiedTwo publications by Stein et al3334 reported the cost-
effectiveness results of a decision-analytic model performedwithin an HTA report conducted by the National Institute forHealth and Clinical Excellence (NICE)20 Thompson Coonet al37 reported the cost-effectiveness results of a decision-analytic model performed within an HTA report conductedby the NHS RampD HTA Program36 Only the original data fromthe HTA reports were considered leaving seven studiesin the review
Long-term effectiveness
In the absence of clinical trials meta-analyses and healthtechnology assessment reports evaluating the long-termeffectiveness of HCV screening we based our results ondecision-analytic modelling studies that included an analysis oflong-term effectiveness of screening for Hepatitis C virusinfection and early HCV-treatment in terms of undiscountedlife years andor quality-adjusted life years gained comparedto no screening and standard careFive out of seven cost-effectiveness studies reported undis-
counted life years andor quality-adjusted life years gained forscreening and early HCV-treatment compared to no screeningand standard care (table 1)2029303536
The values for life years gained due to screening andearly treatment varied from 00004 LYG (015 life days) forscreening blood recipients to 0066 LYG (241 life days) forscreening all patients assessed for HBV vaccination attendingdrug and alcohol services QALYs varied from no gain forscreening in pregnant women to 0072 QALYs (ie 26 quality-adjusted life days) for screening in patients assessed for HBVvaccination attending drug and alcohol services Screening inpopulations with elevated HCV prevalence (eg IDU) wasmore effective in terms of life-years or QALYs gained Studiesreported 0036ndash0066 LYG (131ndash241 life days) for populationswith 42ndash68 HCV prevalence (0010ndash0072 QALYs37ndash263quality-adjusted life days 32ndash68 HCV prevalence) vs00004ndash0013 LYG (01ndash47 life days) for populations with3ndash16 HCV prevalence (0ndash0022 QALYs0ndash80 quality-adjusted life days 1ndash16 HCV prevalence)
Long-term cost-effectiveness
Health technology assessment reports
Two HTA reports were included One summarizedresults from economic studies evaluating HCV-screeningprogrammes and both HTA reports conducted a cost-effectiveness analysisStein et al 20 systematically reviewed the evidence from
health economic studies evaluating HCV-screening pro-grammes All reviewed studies had methodological limitationsand the results were of limited transferability to the UKcontext Based on their decision-analytic results the authorsconcluded that screening for Hepatitis C in intravenous drugusers in contact with medical services may be moderately cost-effective However the authors recommend interpreting theirresults with caution because of substantial uncertainty aroundthe acceptability of screening the adherence to treatment andthe simple nature of the model General screening in genito-urinary medicine (GUM) clinics is less cost-effective andassociated with greater uncertainty than screening IDUs incontact with medical services
246 European Journal of Public Health
Table
1Lo
ng-term
effectiveness
ofscreeningforhepatitisCundisco
untedlife
years
andorQALY
StudyCountry
Population
HCV
prevalence
()
ScreeningTreatm
ent
Incremental
life
years
(LYG)
Incremental
quality-adjusted
life
years
(QALY
)
Castelnuovo
etal36
Form
erIDUsmeanage37ye
ars
49
Systematicscreeningvsnosystematicscreening(spontaneous
0058
0071
(ThompsonCoonetal37)
Generalpracticemeanage37ye
ars
125
presentationto
screeningpossible)HCV-positive
sreceive
0010
0017
NHSRampD
HTA
Programme
UK
Form
erandcu
rrentIDUsin
generalpracticemean
age37ye
ars
49
treatm
entPegIFN+RBV
0036
0071
Allpatients
assessedforHBVva
ccinationattending
drugandalcoholservicesmeanage37ye
ars
68
0066
0072
Prisoners
atreceptionmeanage37ye
ars
(general
counseling)
16
0013
0022
Prisoners
atreceptionmeanage37ye
ars
(counseling
withIDU
focu
s)
42
0036
0058
JusotandColin30
France
Bloodrecipientslt40ye
ars
3ScreeningwithEIA3aftertransfusiontreatm
entforHCV-positive
s
withKnodellscore
5IFN
vsnoscreening+nomedicaltherapy
00085
na
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3ScreeningwithEIA3aftertransfusiontreatm
entforHCV-positive
s
withKnodellscore
5IFN
vsnoscreening+nomedicaltherapy
00004
na
Bloodrecipients
receivinghigh-volumetransfusions
3ScreeningwithEIA3before
andaftertransfusion(treatm
entsame
asabove
)
00030ndash0
0047a
na
Lealetal29
UK
IDUsin
contact
withdrugservicesmeanagena
60
ScreeningvsnoscreeningHCV-positive
swithmoderate
toseve
re
CHCreceivetreatm
entIFN
na
0015b
Plunkett
etal35
USA
Pregnantwomenmeanage30ye
ars
1Screeningvsnoscreening70
(screened)or20
(unscreened)of
HCV-positive
swithmoderate
CHCreceivetreatm
ent
PegIFN+RBV
na
000011
1Screeningandtreatm
entasabove
plusCaesariandelive
ryna
00001
Stein
etal20
(Stein
etal20033334)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
Screeningvsnoscreening50
ofHCV-positive
swithmoderate
CHCreceivetreatm
entIFN+RBV
na
001003b
NHSRampD
HTA
Programme
UK
Genito-urinary
medicineclinic
attendeesmeanage36ye
ars
15
Screeningvsnoscreening50
ofHCV-positive
swithmoderate
CHCreceivetreatm
entIFN+RBV
na
000047b
aRangereportedin
theoriginalstudyforthefirstseco
ndandthirdye
ar
bCalculatedwithdata
intheoriginalpublication
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 247
Castelnuovo et al36 performed a decision-analytic cost-effectiveness study to evaluate screening (named lsquocase-findingrsquo)in patients attending general medical practice or special drugand alcohol services and in prisoners at reception with a focuson former IDUs Based on their analyses the authorsconcluded that screening in these target populations is likelyto be cost-effective despite some uncertainty around theacceptance of testing and treatment
Cost-effectiveness studies
Seven cost-effectiveness studies evaluating HCV screeningin different population settings were included in our review(table 2) Three studies were conducted in the UK202936 twoin France3032 and two in the USA3135
Studies varied in terms of target population study pers-pective time horizon discount rate and compared strategiesincluding screening and antiviral treatment modeFive studies2030ndash3235 evaluated populations at average risk
for Hepatitis C (HCV prevalence 1ndash38) Of those one studyevaluated HCV screening in asymptomatic average-risk adultsin the USA31 one study examined screening in the generalFrench population32 and another study analysed screening inpregnant women in the USA35 two studies consideredscreening in blood recipients3032 and one in generalGenito-urinary medicine clinic attendees20
Four studies20293236 evaluated the cost-effectiveness ofscreening in different populations at higher risk for HCV(HCV prevalence 7ndash80) Four studies evaluated HCVscreening in populations with a history of IDU in differentsettings20293236 two studies analysed the cost-effectiveness ofgeneral screening in attendees of special medical services2036
and one study evaluated HCV screening in prisoners atreception36
Most studies compared systematic screening (and antiviraltreatment for detected HCV-positives) to non-systematicscreening allowing for the possibility of spontaneouscase detection with subsequent antiviral treatment20313536
The percentage of HCV positives eligible for treatment variedSome studies compared screening and antiviral treatmentfor detected HCV positives to no screening and notreatment293032 The antiviral treatment regimens(interferoninterferon plus ribavirinpeginterferon plusribavirin) and algorithms (eg treat all HCV-positives oronly those with severe liver histology) varied Only threestudies203536 evaluated screening followed by peginterferonplus ribavirin the current recommended standard antiviraltherapy38ndash40
The incremental cost-effectiveness ratios (ICER) of HCVscreening vs no screening varied over a wide range (18 300ndash1 151 000EQALY if not dominated) depending on targetpopulation study perspective time horizon discount rate andcompared strategies including screening mode and antiviraltreatment strategies In summary HCV screening in popula-tions with an average HCV prevalence and in pregnant womenwas dominated by no screening Screening in blood recipientsyielded an ICER over 140 600ELYG and was considerednot to be cost-effective30 However this study had a timehorizon of 30 years instead of lifetime and used interferonmonotherapy as antiviral treatment option In contrast HCVscreening in populations with a high HCV prevalencesuch as current or former intravenous drug users was con-sidered cost-effective HCV screening in current andorformer intravenous drug users yielded discounted incre-mental cost-effectiveness ratios below 46 700EQALY2036
General HCV screening amongst members of specialmedical practices (140 500EQALY)20 or in prisoners atreception (30 200EQALY)36 were associated with higher
cost-effectiveness ratios compared to more targeted screening(eg screening only IDUs in these settings)Figure 1 shows the incremental ICER and ICUR ratios of
screening for different HCV prevalence and different antiviraltreatment strategies Most studies evaluated the ICERsICURsin populations with HCV prevalence above 10 Only fourstudies reported results for populations with a lower HCVprevalence Many studies evaluated screening followed byantiviral treatment with interferon or interferon plus ribavirinwhich are not current standard treatment options anymorePeginterferon plus ribavirin the recommended standardantiviral treatment yields more LYsQALYs gained and resultsin much lower ICERsICURs Therefore figure 1c and d showsICERsICURs for screening followed by treatment withpeginterferon plus ribavirin only The majority of thesestudies reported ICURs below 40 000EQALY gained (ICER50 000ELYG) in populations with HCV prevalence above10 and higher ICURs (77 000ndash1 150 000EQALY gained) inlow HCV prevalence populations (results from two studies)
Discussion
We performed a systematic review on the long-term effective-ness and cost-effectiveness of screening for HCV infectionDepending on HCV prevalence and risk selection mode
the incremental long-term effectiveness of HCV screening andearly treatment compared to no screening and standard carevaried from 00004 LYG (015 life-days gained) to 0066 LYG(24 life-days gained) and from 00001 QALY (004 quality-adjusted life-days gained) to 0072 QALY (26 quality-adjustedlife-days gained) To put these figures into perspective theycan be compared with other screening programs For examplebiennial cervical cancer screening compared to no screening isassociated with a gain of 92 life days Moving from a 2-year toa 1-year interval is associated with a gain of four life days41
Given 1 undetected HIV-prevalence one-time HIVscreening in US health care settings was reported to increaselife-expectancy by 39 days (29 quality-adjusted life days)Screening every 5 years would gain additional 097 days(070 quality-adjusted life days)42
It must be noted that these numbers reflect the averageincremental life expectancy per person screened This trans-lates to many persons with no gain and some persons withseveral years or decades gain in life expectancyThe incremental cost-effectiveness ratios varied over a wide
range depending on target population (eg HCV prevalenceage etc) study perspective time horizon discount rate andcompared strategies including screening settings and antiviraltreatment strategies Therefore the comparability of theresults is limitedHCV screening vs no screening resulted in ICURs ranging
from 18 300 to 1 151 000EQALY if screening was notdominated In the reviewed studies HCV screening wasconsidered cost-effective (ICURs below 40 000EQALY fortreatment with peginterferon plus ribavirin) in populationswith an elevated HCV prevalence such as intravenous drugusers General HCV screening in average-risk adults wasunlikely to be effective and cost-effectiveHowever cost-effectiveness should not be the main criterion
for the decision to implement HCV screening Given thesubstantial number of prevalent iatrogenic HCV-infected casesother ethical concepts such as fairness and equity may beconsidered as wellCost-effectiveness is depending on the willingness-to-pay in
a certain society which depends on several economical socialand political factors There is currently no general agreementacross countries about the cost-effectiveness threshold To givea measurement on the incremental cost-effectiveness ratios of
248 European Journal of Public Health
Table
2Disco
untedincrementalco
st-effectiveness-ratios(ICER)anddisco
untedincrementalco
st-utility-ratios(ICUR)forscreeningforhepatitisC
StudyCountry
CurrencyYear
Perspective
Disco
unt
rate
()
Comparator
TargetPopulation
ICER
(ELYG)
ICUR
(EQ
ALY
)
Castelnuovo
etal36
(ThompsonCoon
UKpound2004
NationalHealth
6(costs)15
(effects)
Systematicscreeningvsnosystematicscreening
(spontaneouspresentationto
screeningpossible)
Form
erIDUsgeneralcasemeanage37ye
ars49
HCV
preva
lence
30232
24858
etal37)
Services(N
HS)
HCV-positive
sreceivetreatm
entPegIFN+RBV
Generalpracticemeanage37ye
ars125
HCVpreva
lence
38633
23321
NHSRampD
HTA
Programme
Form
erandcu
rrentIDUsin
generalpracticemeanage
37ye
ars49
HCV
preva
lence
30194
24827
UK
Allpatients
assessedforHBVva
ccinationattendingdrugand
alcoholservicesmeanage37ye
ars68
HCV
preva
lence
28689
26365
(Screeningincludedgenerallecture
onHCV)
Prisoners
atreceptionmeanage37ye
ars16
HCVpreva
lence
50833
30231
(Screeningincludedlecture
withfocu
sonIDU
andrisk
ofHCV)
Prisoners
atreceptionmeanage37ye
ars42
HCVpreva
lence
40301
24813
JusotandColin30
France
FF1996Health
care
system
30ye
ars
time
Nodisco
unt
rate
ScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipientslt40ye
ars3
HCV
preva
lence
140674
mdash
horizo
nScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3
HCV
preva
lence
477654
mdash
ScreeningwithEIA3before
andaftertransfusion
(treatm
entsameasabove
)
Bloodrecipients
receivinghigh-volumetransfusions
3
HCV
preva
lence
144970
mdash
Lealetal29
UKpound1997na
6ScreeningvsnoscreeningHCV-positive
swithmoderate
IDUsin
contact
withdrugservices60
HCV
preva
lence
mdash119754
UK
toseve
reCHCreceivetreatm
entIFN
(IFN
+RBV)
(18267-34537a)
Loubiere
etal32
France
E1998Health
care
system
3ScreeningwithEIA3+EIA3vsnoscreening+notreatm
ent
50
ofCHCcasesand40
ofcirrhosiscasesreceive
treatm
entIFN+RBV
IDUs80
HCV
preva
lence
3881
mdash
ScreeningwithEIA3+PCRvsnoscreening+notreatm
ent
treatm
entasabove
9742
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
Patients
transfusedbefore
19917
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
243737
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
GeneralFrench
population12
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
5005
mdash
Plunkett
etal35
USA
US$
2003Health
care
system
3ScreeningvsnoscreeningHCV-positive
sreceivetreatm
ent
PegIFN+RBV
Pregnantwomen1
HCV
preva
lence
mdashNoscreening
dominant
Asabove
plusCaesariandelive
rymdash
1150976
Singeretal31
USA
US$
2001S
ocietal
3Screeningvsnoscreening20
ofHCV-positive
sreceive
treatm
entIFN+RBV
Asymptomatic
ave
ragerisk
adultsmeanage35ye
ars
38
HCV
preva
lence
mdashNoscreening
dominant
Stein
etal20
(Stein
etal3334)
UKpound2001
NationalHealth
6(costs)15
(effects)
Screeningvsnoscreening50
ofHCV-positive
swith
moderate
CHCreceivetreatm
entIFN+RBV(PegIFN+RBV)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
HCV
preva
lence
mdash46707(23598)
NHSRampD
HTA
Programme
Services(N
HS)
Allscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV(PegIFN+RBV)
Genito-urinary
medicineclinic
attendeesmeanage
36ye
ars15
HCVpreva
lence
mdash140471(77052)
UK
IDUsscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV
32
HCVpreva
lence
mdash45076
aDependingontreatm
entduration(24or48weeks)
andribavirindosage(1000or1200mgd)
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 249
well-accepted screening programs cytological screening forcervical cancer every 3 years compared to no screening costspound1800 per life year gained in the UK43 1400ELYG inGermany44 and 8400 US$LYG in the USA45 Screening blooddonors for HIV costs 14 000 US$LYG46 Given 1 undetectedHIV-prevalence one-time HIV screening in US health caresettings would result in 41 700 US$QALY screening every 5years 123 600 US$QALY42
In the absence of long-term clinical trials all results wereretrieved from decision-analytic studies which link diagnosticand clinical short-term outcomes (eg test sensitivity andspecificity or viral response) to clinical long-term outcomes(eg mortality and long-term quality of life)47 The includedstudies were heterogeneous in regard to health economicanalysis techniques (eg time horizons discounting etc)HCV population prevalence acquisition risk factors andantiviral therapy Therefore the outcomes in terms of lifeyears gained quality adjusted life years and incremental costeffectiveness ratios varied over a wide range However severalresults were logical and predictable for example screening ismore cost effective in higher prevalence or higher riskpopulationsmdasha result that has been reported for other diseasestoo4849
Like all decision-analytic models screening models mustsimplify the real world for more transparency and thepossibility to analyse specific research questions47 However
some methodological and structural model assumptions mayhave an important impact on clinical and economic outcomesand could lead to bias in favour for or against HCV screeningThus it is important to discuss some aspects essential fora valuable screening modelFirst it is important to allow for the possibility of
spontaneous case detection by symptoms with subsequentantiviral treatment in the non-screening strategy of any HCV-screening model Without these estimates the benefits of thescreening strategy are overestimated and outcomes are biasedin favour of the HCV-screening strategy Second the settingof antiviral treatment in both strategies is very important Notreatment in the non-screening strategy or lsquowait and treatcirrhosisrsquo vs lsquoscreen and treat all HCV-positive patientsrsquomay overestimate both the incremental benefits and costs ofscreening Therefore antiviral treatment should be consideredfor chronic HCV-patients (detected through screeningsymptoms or spontaneous presentation) in both strategiesaccording to recent treatment guidelines Third moststudies considered antiviral therapy with interferon plusribavirin20293132 and two studies used even interferonmonotherapy293032 Only three studies considered peginter-feron plus ribavirin203536 Having better treatment optionsand administering antiviral treatment according to genotype-specific guidelines with early treatment stop for patients notresponding would allow tailoring treatment efficiently which
Figure 1 Incremental cost-effectiveness ratio of screening compared to no screening in Euro per life year gained (EuroLYG) orquality-adjusted life-year gained (EuroQALY) for different HCV prevalence in the target population (a) ICER (in EuroLYG) ofHCV screening and different antiviral treatment (b) ICUR (in EuroQALY) of HCV screening and different antiviral treatment (c)ICER (in EuroLYG) of HCV screening and antiviral treatment with peginterferon plus ribavirin (d) ICUR (in EuroQALY) of HCVscreening and antiviral treatment with peginterferon plus ribavirin (Each point represents the ICERICUR of a specific targetpopulation and screeningtreatment strategy Multiple points may come from the same modelling study) IFN= interferonRBV= ribavirin PegIFN=peginterferon One point out of range of figure 1(d) 1 150 976QALY with 1 HCV prevalencePegIFN+RBV
250 European Journal of Public Health
would reduce adverse effects harms and antiviral treatmentcosts and improve the cost-effectiveness of HCV screening dueto better clinical and economic outcomes Fourth eligibilityof patients for and adherence to antiviral treatment shouldbe considered In particular any HCV-screening modelshould consider a lsquowait and seersquo strategy in the screeningarm because not all patients necessarily should or want to betreated immediately after HCV detection50 HCV screeningand watchful monitoring HCV-infected patients may be moreeffective and cost-effective than screening with immediatetreatment of all HCV-infected patients since a fraction ofHCV-infected patients may not develop fibrosis or cirrhosisduring their lifetime This is particularly important for theelderlyThe age at which HCV-infected patients are identified and
treated is a very important modelling factor as well Moststudies used an average age of 40 years for the evaluatedpopulation which may be adequate for patients with CHCwhich already developed symptoms However HCV screeningmay detect HCV-infected individuals earlier at significantlyyounger age In addition certain HCV-infected populationsat risk for advanced liver disease such as intravenous druguser or ethnic minority groups who have acquired HCViatrogenically in early childhood have a significantly youngeraverage age Thus in these cases benefits from early detectionand treatment may be underestimatedDiscounting costs and effects is important and affects ICERs
since the clinical and economic benefits of screening due toavoided cirrhosis and its sequelae occur in the distant futurewhereas the costs of screening and antiviral treatment occurmuch earlier One study30 in France did not discount at all andtwo studies 2036 conducted in the UK used different discountrates for costs and effects The ICERs increased significantly insensitivity analyses when cost and effects were equallydiscounted with 35 annually (eg from 16 514 poundQALY to33 235 poundQALY36)Most studies used a lifelong time horizon for their analyses
which is the most adequate timeframe to use As benefits thatoccur far in the future will not be considered within shortertime horizons estimated cost-effectiveness ratios may be toohigh One study used a 30 year time horizon30 As cirrhosisand its complications develop slowly within 10ndash30 years eventhis time horizon may be too short and benefits may beunderestimatedAll studies included in this review take into account the
natural history of chronic Hepatitis C disease progression andmortality from CHC-related complications Only one studyused the natural history of chronic Hepatitis B diseaseprogression as at that time no information existed regardingHepatitis C progression However it was not always clearwhether slower progression rates were considered for screenedpopulations tending to present histological milder Hepatitis Ccompared to non-screened populations mostly detected bysymptoms Several studies reported that patients with mildCHC and normal ALT levels may have a reduced risk ofprogression to cirrhosis compared to patients with more severehistology or elevated ALT levels751ndash54 Furthermore analysesfor CHC patients co-infected with HIV should assume higherprogression rates to CHC-related liver diseases than analysesin non-co-infected CHC patients5556In addition most studies used age- and gender-specific
mortality rates of the general population for the backgroundmortality for CHC patients However background mortality isoften higher due to co-morbidity from other diseases such asHIV- or HBV-coinfection or in case of IDUs from continua-tion of or relapse to drug abuse Even patients with moderateCHC or cirrhosis that respond to antiviral treatment continue
to have an increased risk of developing hepatocellularcarcinoma which is associated with significant mortalityOverall this review discovered many study limitations and
the need for further systematic research in HCV screeningParticularly health-economic studies in population with lowor average HCV prevalence evaluating HCV screeningcombined with different strategies of monitoring and antiviraltreatment of HCV-positives according to current treatmentstandard are requiredFinally it must be mentioned that due to different
epidemiology health care systems disease managementpractice patterns and treatment costs in different Europeancountries results cannot be generalized and are difficult if notimpossible to be directly transferred from one country toanother Further research should focus on the development ofa Pan-European Hepatitis C screening model that fulfils thequality criteria discussed above and which can be adapted tothe context of the different health care systems and countrieswithin Europe
Conclusion
Although HCV screening fulfils general population screeningcriteria specific well-formulated national programs forHepatitis C screening are lacking in most European countriesBased on current evidence HCV screening and early treatmenthas the potential to improve average life-expectancy butshould focus on populations with elevated HCV prevalence tobe cost-effective Further research is needed to investigate thelong-term health-economic impact of HCV screening whencombined with appropriate monitoring and treatmentstrategies in different European health care systems Furtherassessments should focus on determining optimal targetgroups and settings that yield effective and cost-effectiveHCV screening strategies
Acknowledgements
We thank the members of the PanEuropean Hepatitis C ExpertPanel for providing local information and reviewing the resultsof our study Maria Buti MD Hospital General UniversitarioVall de Hebron Barcelona Spain Florin Caruntu Matei BalsInfectious Disease Institute Bucharest and Carol DavilaMedicine and Pharmacy University Bucharest RomaniaCharles Gore The Hepatitis C Trust London UK Scott DHolmberg MD MPH Epidemiology and Surveillance BranchDivision of Viral Hepatitis Prevention NCHHSTP Centers forDisease Control and Prevention Atlanta GA USA NadinePiorkowsky The European Liver Patients Association (ELPA)Germany Prof William Rosenberg Institute of HepatologyUniversity College London UK However the authors aloneare responsible for the results reported and views expressed inthe paper The authors had complete and independent controlover study design analysis and interpretation of data reportwriting and publication regardless of results
Funding
This project was supported in part by an unrestrictededucational grant from Hoffmann La-Roche Ltd BaselSwitzerland
Conflicts of interest NM has received travel support fromHoffmann La-Roche Ltd to present preliminary results of thestudy to different audiences US has received healthtechnology assessment research grants from the GermanFederal Ministry of Health and the Austrian Academy of
Cost-effectiveness of HCV-screening 251
Sciences and unrestricted research grants from ScheringPlough and Roche
Key points
Although HCV screening fulfils general populationscreening criteria specific well-formulated nationalpublic health programs for hepatitis C screening arelacking in most European countries
According to this review HCV screening with earlytreatment has the potential to improve averagelife-expectancy but should focus on populationswith elevated HCV prevalence to be cost-effectiveAppropriate target groups could be selected based onrisk factor profiles
Appropriate monitoring and treatment strategiesfor detected early disease may improve the cost-effectiveness of HCV screening
In view of the multitude of iatrogenic infectionshowever cost-effectiveness may not be the onlydecision criterion for the implementation of HCVscreening Aspects like fairness might be considered aswell
Further research should focus on the public-healthimpact of HCV screening when combined withappropriate monitoring and treatment strategies andon determining optimal target groups and settings
References
1 Weissing L Roy K Sapinho D et al Surveillance of hepatitis C infection
among injecting drug users in the European Union In Jager J Limburg W
Kretzschmar M et al editors Hepatitis C and injecting drug use
Luxembourg European Monitoring Centre for Drugs and Drug Addiction
2006 91ndash135
2 European Centre for Disease Prevention and Control (ECDC) Annual
epidemiologic report on communicable diseases in Europe 2007 http
wwwecdceuropaeu (date last accessed 28 June 2007)
3 Rantala M van de Laar MJ Surveillance and epidemiology of hepatitis B and
C in Europe ndash a review Euro Surveill 200813 Available online
httpwwweurosurveillanceorg (date last accessed 13 December 2008)
4 Alter H Seeff L Recovery persistence and sequelae in hepatitis C virus
infection a perspective on long-term outcome Semin Liver Dis
20002017ndash35
5 Anonymous EASL international consensus conference on hepatitis C
Paris 26ndash27 February 1999 Consensus statement J Hepatol
199931(Suppl 1)3ndash8
6 Dore GJ Freeman AJ Law M Kaldor JM Is severe liver disease a common
outcome for people with chronic hepatitis C J Gastroenterol Hepatol
200217423ndash30
7 Freeman A Dore G Law M et al Estimating progression to cirrhosis in
chronic hepatitis C virus infection Hepatology 200134809ndash16
8 Freeman AJ Law MG Kaldor JM Dore GJ Predicting progression
to cirrhosis in chronic hepatitis C virus infection J Viral Hepat
200310285ndash93
9 Hopf U Moller B Kuther D et al Long-term follow-up of posttransfusion
and sporadic chronic hepatitis non-A non-B and frequency of circulating
antibodies to hepatitis C virus (HCV) J Hepatol 19901069ndash76
10 Koretz R Abbey H Coleman E Gitnick G Non-A non-B post-transfusion
hepatitis Looking back in the second decade Ann Intern Med
1993119110ndash5
11 Mattsson L Outcome of acute symptomatic non-A non-B hepatitis
a 13-year follow-up study of hepatitis C virus markers Liver
199313274ndash8
12 Tremolada F Casarin C Alberti A et al Long-term follow-up of non-A
non-B (type C) post-transfusion hepatitis J Hepatol 199216273ndash81
13 World Health Organization (WHO) Global surveillance and control of
hepatitis C Report of a WHO consultation organized in collaboration with
the Viral Hepatitis Prevention Board Antwerp Belgium J Viral Hepatitis
1999635ndash47
14 Wilson J Jungner Y Principles and practice of mass screening for disease
Bol Oficina Sanit Panam 196865281ndash393
15 Wilson J The evaluation of the worth of early disease detection J R Coll Gen
Pract 196816(Suppl 2)48ndash57
16 Brady B Siebert U Sroczynski G et al Pegylated interferon combined with
ribavirin for chronic hepatitis C virus infection an economic evaluation
[Technology Report No 82] Ottawa Canadian Agency for Drugs and
Technologies in Health 2007
17 Wright M Grieve R Roberts J Main J Thomas HC on behalf of the UK
Mild Hepatitis C Trial Investigators Health benefits of antiviral therapy for
mild chronic hepatitis C randomised controlled trial and economic
evaluation Health Technol Assess 2006101ndash132
18 Maheshwari A Ray S Thuluvath PJ Acute hepatitis C Lancet
2008372321ndash32
19 Jullien-Depradeux AM Bloch J Le Quellec-Nathan M Abenhaim A
National campaign against hepatitis C in France (1999ndash2002) Acta
Gastroenterol Belg 200265112ndash4
20 Stein K Dalziel K Walker A et al Screening for hepatitis C among injecting
drug users and in genitourinary medicine clinics systematic reviews of
effectiveness modelling study and national survey of current practice
Health Technol Assess 200261ndash122
21 Department of HealthGeneral Health Protection Hepatitis C Action Plan
for England July 2004 Available at wwwdhgovukpublications (date last
accessed 12 November 2006
22 European Liver Patient Association (ELPA) European Parliament demands
EU-wide action on Hepatitis C 2007 httpwwwelpaorg (date last accessed
15 May 2007)
23 European Liver Patient Association (ELPA) Promoting Hepatitis C Screening
in Europe 2007 httpwwwelpaorg (date last accessed 8 May 2008)
24 Shepherd J Brodin HFT Cave CB et al Clinical- and cost-effectiveness of
pegylated interferon alfa in the treatment of chronic hepatitis C a systematic
review and economic evaluation Int J Technol Assess Health Care
20052147ndash54
25 Siebert U Sroczynski G on behalf of the German Hepatitis C Model
(GEHMO) Group and the HTA Expert Panel on Hepatitis C Antiviral
therapy for patients with chronic hepatitis C in Germany Evaluation of
effectiveness and cost-effectiveness of initial combination therapy with
InterferonPeginterferon plus Ribavirin Series of the German Institute for
Medical Documentation and Information commissioned by the Federal
Ministry of Health and Social Security Cologne DIMDI 2003
26 Organisation for Economic Co-operation and Development (OECD) Gross
domestic product purchasing power parities 2006 httpwwwoecdorg
27 German Federal Statistical Office German Consumer Price Index (CPI) 2006
httpwwwdestatisde
28 Population Division of the Department of Economic and Social Affairs of the
United Nations Secretariat World population prospects the 2006 revision and
world urbanization prospects the 2005 revision httpesaunorgunpp
29 Leal P Stein K Rosenberg W What is the cost utility of screening for
hepatitis C virus (HCV) in intravenous drug users J Med Screen
19996124ndash31
30 Jusot JF Colin C Cost-effectiveness analysis of strategies for hepatitis C
screening in French blood recipients Eur J Public Health 200111373ndash9
31 Singer ME Younossi ZM Cost effectiveness of screening for hepatitis C virus
in asymptomatic average-risk adults Am J Med 2001111614ndash21
32 Loubiere S Rotily M Moatti JP Prevention could be less cost-effective than
cure the case of hepatitis C screening policies in France Int J Technol Assess
Health Care 200319632ndash45
33 Stein K Dalziel K Walker A et al Screening for hepatitis C in genito-urinary
medicine clinics a cost utility analysis J Hepatol 200339814ndash25
34 Stein K Dalziel K Walker A et al Screening for Hepatitis C in injecting drug
users a cost utility analysis J Public Health 20042661ndash71
252 European Journal of Public Health
35 Plunkett BA Grobman WA Routine hepatitis C virus screening in
pregnancy a cost-effectiveness analysis Am J Obstet Gynecol
20051921153ndash61
36 Castelnuovo E Thompson-Coon J Pitt M et al The cost-effectiveness of
testing for hepatitis C in former injecting drug users Health Technol Assess
200610 iiindashiv ixndashxii 1ndash93
37 Thompson Coon J Castelnuovo E Pitt M et al Case finding for hepatitis C
in primary care a cost utility analysis Fam Pract 200623393ndash406
38 Sherman M Shafran S Burak K et al Management of chronic hepatitis C
consensus guidelines Can J Gastroenterol 200721(Suppl C)25Cndash34C
39 NIH Consensus Statement National institutes of health consensus devel-
opment conference management of Hepatitis C 2002 - June 10ndash12 2002
Hepatology 200236(5 Suppl 1)S3ndash20
40 Zeuzem S Standard treatment of acute and chronic hepatitis C
Z Gastroenterol 200442714ndash9
41 Siebert U Sroczynski G Hillemanns P et al The German cervical cancer
screening model development and validation of a decision-analytic model
for cervical cancer screening in Germany Eur J Public Health
200616185ndash92
42 Sanders G Bayoumi A Sundaram V et al Cost-effectiveness of screening for
HIV in the era of highly active antiretroviral therapy N Engl J Med
2005352570ndash85
43 Payne N Chilcott J McGoogan E Liquid-based cytology in cervical
screening a rapid and systematic review Health Technol Assess 200041ndash73
44 Siebert U Muth C Sroczynski G et al Liquid-based preparation and
computer-assisted examination of cervical smears in cervical cancer screening
Clinical effectiveness economic evaluation and systematic decision analysis
Series of the German Institute for Medical Documentation and Information
commissioned by the Federal Ministry of Health and Social Security St
Augustin Asgard 2004
45 McCrory DC Matchar DB Evaluation of cervical cytology - systematic
review HTA Report Agency for Health Care Research and Quality (AHRQ)
Report No 5 1999
46 Tengs T Adams M Pliskin J et al Five-hundred life-saving interventions
and their cost-effectiveness Risk Anal 199515369ndash90
47 Siebert U When should decision-analytic modeling be used in the
economic evaluation of health care [Editorial] Eur J Health Econ
20034143ndash50
48 Shamir R Hernell O Leshno M Cost-effectiveness analysis of
screening for celiac disease in adult population Med Decis Making
200626282ndash93
49 Hayashino Y Shimbo T Tsujii S et al Cost-effectiveness of coronary artery
disease screening in asymptomatic patients with type 2 diabetes and other
atherogenic risk factors in Japan factors influencing on international
application of evidence-based guidelines Int J Cardiol 200711888ndash96
50 Wong JB Koff RS Watchful waiting with periodic liver biopsy versus
immediate empirical therapy for histologically mild chronic hepatitis C A
cost-effectiveness analysis Ann Intern Med 2000133665ndash75
51 Alberti A Morsica G Chemello L et al Hepatitis C viremia and liver
disease in symptom-free individuals with anti-HCV Lancet
1992340697ndash8
52 Alter H Conry-Cantilena C Melpolder J et al Hepatitis C in asymptomatic
blood donors Hepatology 199726(3 Suppl 1)29Sndash33S
53 Marcellin P Levy S Erlinger S Therapy of hepatitis C patients with normal
aminotransferase levels Hepatology 199726(3 Suppl 1)133Sndash6S
54 Mathurin P Moussalli J Cadranel J et al Slow progression rate of fibrosis in
hepatitis C virus patients with persistently normal alanine transaminase
activity Hepatology 199827868ndash72
55 Graham CS Baden LR Yu E et al Influence of human immunodeficiency
virus infection on the course of hepatitis C virus infection a meta-analysis
Clin Infect Dis 200133562ndash9
56 Soto B Sanchez-Quijano A Rodrigo L et al Human immunodeficiency
virus infection modifies the natural history of chronic parenterally-acquired
hepatitis C with an unusually rapid progression to cirrhosis J Hepatol
1997261ndash5
Received 14 September 2008 accepted 22 December 2008
Cost-effectiveness of HCV-screening 253
Long-term effectiveness and cost-effectivenessof screening for Hepatitis C virus infection
Gaby Sroczynski1 Eva Esteban1 Annette Conrads-Frank12 Ruth Schwarzer1Nikolai Muhlberger1 Davene Wright2 Stefan Zeuzem3 Uwe Siebert124
Background Hepatitis C virus (HCV) infection is an emerging problem in public health In mostcountries the majority of HCV infected people are yet undiagnosed Early detection and treatmentmay result in better health outcomes and save costs by preventing future advanced liver disease Theevidence for long-term effectiveness and cost-effectiveness of HCV screening was systematicallyreviewed Methods We performed a systematic literature search on long-term health-economic effectsof HCV screening and included Health Technology Assessment (HTA) reports systematic reviewslong-term clinical trials full health economic and decision-analytic modelling studies with a sufficientlylong time horizon and patient-relevant long-term outcomes such as life-years gained (LYG) or quality-adjusted life years (QALY) gained Economic results were converted to 2005 Euros Results Seven studieswere included Target population HCV prevalence study perspective discount rate screening andantiviral treatment mode varied The incremental effectiveness of HCV screening and early treatmentcompared to no screening and standard care varied from 00004 to 0066 LYG and from 00001 to 0072QALY Incremental cost-effectiveness and cost-utility ratios of HCV screening vs no screening were3900ndash243 700ELYG and 18 300ndash1 151 000EQALY HCV screening seems to be cost-effective inpopulations with high HCV prevalence but not in low HCV prevalence populations Conclusions HCVscreening and early treatment have the potential to improve average life-expectancy but should focuson populations with elevated HCV prevalence to be cost-effective Further research on the long-termhealth-economic impact of HCV screening when combined with appropriate monitoring strategiesin different European health care systems is needed
Keywords chronic hepatitis C cost effectiveness screening
Introduction
Chronic Hepatitis C (CHC) is an emerging problem inpublic health In Europe the Hepatitis C virus (HCV)
infection affects gt 1 of the population with a HCV-incidenceof 86100 00012 HCV prevalence differs considerably acrosscountries and risk groups3 The highest HCV prevalence(36ndash81) is currently found in intravenous drug users(IDUs)1
The majority of HCV-infected people progress to chronicdisease4 Approximately 15ndash20 of CHC cases developcirrhosis within 20ndash30 years5ndash12 which is associated with ahigh risk for advanced liver disease quality of life impairmentreduced life expectancy and high treatment costs CHC isconsidered to be the leading cause of liver cancer and livertransplantation in Europe13
Screening for CHC clearly fulfils the general criteriafor population screening1415 and may help to identify
HCV-infected patients in an early stage of the disease(eg mild chronic hepatitis without fibrosis) so that theycan be adequately monitored and treated Moreover it hasbeen reported that it may be cost-effective to treat patientsdiagnosed with mild disease1617 Furthermore for the majorityof acute HCV cases which present no symptoms earlytreatment and for symptomatic acute HCV cases watchfulwaiting may be currently the most effective and cost-effectivestrategies18 Thus early detection and early treatment mayhave the potential to result in better health outcomes and tosave costs by preventing future advanced liver disease Anotherimportant reason to identify unaware HCV-infected persons isto prevent further HCV-transmission using appropriateinterventions to change behaviour leading to HCV transmis-sion (eg needle sharing)However currently most European countries lack specific
policies for HCV screening Only few European countriesperform HCV screening in special subpopulations withelevated HCV prevalence But even in these cases the recom-mendations and medical practices are heterogeneous19ndash21
In March 2007 the European Parliament called for EU-wideaction on Hepatitis C by formally adopting the WrittenDeclaration on Hepatitis C22 Specifically the EuropeanParliament calls for a council recommendation on HepatitisC screening to ensure early diagnosis and wider access totreatment and care within the member states Furthermore theEuropean Liver Patients Association (ELPA) strongly suggeststhat the European Union should encourage tailored screeningcampaigns that target people in at-risk groups23
Despite all potential benefits HCV screening may havesubstantial health-economic consequences and it is not clearwhether it leads to improved long-term health outcomesbecause not all CHC patients will develop progressive liverdisease in their lifetime and not all CHC patients benefitfrom antiviral treatment162425 Furthermore current antiviral
Correspondence Uwe Siebert Department of Public HealthInformation Systems and Health Technology Assessment UMIT ndashUniversity for Health Sciences Medical Informatics and TechnologyEduard Wallnoefer Center I A-6060 Hall iT Austria tel +43-50-8648-3930 fax +43-50-8648-673930 e-mail public-healthumitat
1 Department of Public Health Information Systems and HealthTechnology Assessment UMIT ndash University of Health SciencesMedical Informatics and Technology Hall iT Austria
2 Institute for Technology Assessment and Department of RadiologyMassachusetts General Hospital Harvard Medical School BostonMA USA
3 Department of Internal Medicine Gastroenterology HepatologyPneumology and Endocrinology Johann Wolfgang Goethe-University Frankfurt aM Germany
4 Program in Health Decision Science Department of Health Policyand Management Harvard School of Public Health Boston MAUSA
European Journal of Public Health Vol 19 No 3 245ndash253
The Author 2009 Published by Oxford University Press on behalf of the European Public Health Association All rights reserved
doi101093eurpubckp001 Advance Access published on 5 February 2009
treatment options are costly and impose the burden of sideeffects162425 Therefore a thorough assessment of HCVscreening must consider all consequences for individuals andsociety during a sufficiently long time horizonIn this review we systematically evaluated the current
evidence on long-term effectiveness and cost-effectivenessof screening for Hepatitis C virus infection in differentpopulations
Methods
A systematic literature search was conducted using thedatabases Medline Cochrane Database of SystematicReviews Cochrane central register of controlled trials(CENTRAL) and the NHS databases abstracts of reviews ofeffects (DARE) Health technology assessment (HTA) andEconomic evaluation database (NHS EED) to identify studiesassessing the clinical and economic long-term consequencesof screening for Hepatitis C virus infection (HCV) The timehorizon of the literature search was limited to March 2007 Allreferences were imported into a literature database usinga literature management software program (EndNote 90Thomson ResearchSoft TM Thomson Corporation StamfordCT USA)First reference titles and abstracts were screened for
relevant articles In a second step studies were selected basedon a priori inclusion and exclusion criteria after reading thefull text document We included health technology assessment(HTA) reports systematic reviews long-term clinical trialsfull health economic studies and decision-analytic modellingstudies assessing the impact of screening for Hepatitis C virusinfections As clinical and economic consequences of screeningoccur over a long time horizon we only included studies thatreported both long-term effectiveness and cost effectiveness interms of life-years gained (LYG) quality-adjusted life-yearsgained (QALY) lifetime cost per life-year gained (CostLYG)or cost per quality-adjusted life-year gained (CostQALY)We excluded studies in languages other than English orGerman editorials letters abstracts unsystematic reviewsstudies reporting only short-term effectiveness data (egsustained virological response SVR) studies assessing screen-ing of blood donations or serological testing during antiviraltreatment We also excluded studies that did not reportsufficient data to derive incremental effectiveness and cost-effectiveness ratios or cost-effectiveness studies reporting onlycosts per HCV case detectedWe systematically extracted the results from the publications
and summarized the information in evidence tables reportingclinical and economic outcomesIf necessary and possible we recalculated the incremental
cost-effectiveness ratios (ICER) or incremental cost-utilityratios (ICUR) from the data reported in the publicationTo facilitate comparison across countries and to enable othercountries to transfer our results into their currencies all costswere converted to 2005 Euro (E) using gross domestic productpurchasing power parities (GDPPP) (conversion to Euro ofthe index year) and the German Consumer Price Index(CPI) (inflation to the year 2005)2627 Germany was used asthe reference country for the cost conversion because it is thecountry with the largest population in Europe28
Results
Literature search
A total of 127 unique references were retrieved Tenpublications2029ndash37 including two HTA reports 2036 assessing
lifetime health effects and costs of screening for Hepatitis Cmet the inclusion criteria No long-term clinical trial assessingthe long-term effectiveness (eg mortality) of screening forHepatitis C virus infection and early HCV-treatment wasidentifiedTwo publications by Stein et al3334 reported the cost-
effectiveness results of a decision-analytic model performedwithin an HTA report conducted by the National Institute forHealth and Clinical Excellence (NICE)20 Thompson Coonet al37 reported the cost-effectiveness results of a decision-analytic model performed within an HTA report conductedby the NHS RampD HTA Program36 Only the original data fromthe HTA reports were considered leaving seven studiesin the review
Long-term effectiveness
In the absence of clinical trials meta-analyses and healthtechnology assessment reports evaluating the long-termeffectiveness of HCV screening we based our results ondecision-analytic modelling studies that included an analysis oflong-term effectiveness of screening for Hepatitis C virusinfection and early HCV-treatment in terms of undiscountedlife years andor quality-adjusted life years gained comparedto no screening and standard careFive out of seven cost-effectiveness studies reported undis-
counted life years andor quality-adjusted life years gained forscreening and early HCV-treatment compared to no screeningand standard care (table 1)2029303536
The values for life years gained due to screening andearly treatment varied from 00004 LYG (015 life days) forscreening blood recipients to 0066 LYG (241 life days) forscreening all patients assessed for HBV vaccination attendingdrug and alcohol services QALYs varied from no gain forscreening in pregnant women to 0072 QALYs (ie 26 quality-adjusted life days) for screening in patients assessed for HBVvaccination attending drug and alcohol services Screening inpopulations with elevated HCV prevalence (eg IDU) wasmore effective in terms of life-years or QALYs gained Studiesreported 0036ndash0066 LYG (131ndash241 life days) for populationswith 42ndash68 HCV prevalence (0010ndash0072 QALYs37ndash263quality-adjusted life days 32ndash68 HCV prevalence) vs00004ndash0013 LYG (01ndash47 life days) for populations with3ndash16 HCV prevalence (0ndash0022 QALYs0ndash80 quality-adjusted life days 1ndash16 HCV prevalence)
Long-term cost-effectiveness
Health technology assessment reports
Two HTA reports were included One summarizedresults from economic studies evaluating HCV-screeningprogrammes and both HTA reports conducted a cost-effectiveness analysisStein et al 20 systematically reviewed the evidence from
health economic studies evaluating HCV-screening pro-grammes All reviewed studies had methodological limitationsand the results were of limited transferability to the UKcontext Based on their decision-analytic results the authorsconcluded that screening for Hepatitis C in intravenous drugusers in contact with medical services may be moderately cost-effective However the authors recommend interpreting theirresults with caution because of substantial uncertainty aroundthe acceptability of screening the adherence to treatment andthe simple nature of the model General screening in genito-urinary medicine (GUM) clinics is less cost-effective andassociated with greater uncertainty than screening IDUs incontact with medical services
246 European Journal of Public Health
Table
1Lo
ng-term
effectiveness
ofscreeningforhepatitisCundisco
untedlife
years
andorQALY
StudyCountry
Population
HCV
prevalence
()
ScreeningTreatm
ent
Incremental
life
years
(LYG)
Incremental
quality-adjusted
life
years
(QALY
)
Castelnuovo
etal36
Form
erIDUsmeanage37ye
ars
49
Systematicscreeningvsnosystematicscreening(spontaneous
0058
0071
(ThompsonCoonetal37)
Generalpracticemeanage37ye
ars
125
presentationto
screeningpossible)HCV-positive
sreceive
0010
0017
NHSRampD
HTA
Programme
UK
Form
erandcu
rrentIDUsin
generalpracticemean
age37ye
ars
49
treatm
entPegIFN+RBV
0036
0071
Allpatients
assessedforHBVva
ccinationattending
drugandalcoholservicesmeanage37ye
ars
68
0066
0072
Prisoners
atreceptionmeanage37ye
ars
(general
counseling)
16
0013
0022
Prisoners
atreceptionmeanage37ye
ars
(counseling
withIDU
focu
s)
42
0036
0058
JusotandColin30
France
Bloodrecipientslt40ye
ars
3ScreeningwithEIA3aftertransfusiontreatm
entforHCV-positive
s
withKnodellscore
5IFN
vsnoscreening+nomedicaltherapy
00085
na
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3ScreeningwithEIA3aftertransfusiontreatm
entforHCV-positive
s
withKnodellscore
5IFN
vsnoscreening+nomedicaltherapy
00004
na
Bloodrecipients
receivinghigh-volumetransfusions
3ScreeningwithEIA3before
andaftertransfusion(treatm
entsame
asabove
)
00030ndash0
0047a
na
Lealetal29
UK
IDUsin
contact
withdrugservicesmeanagena
60
ScreeningvsnoscreeningHCV-positive
swithmoderate
toseve
re
CHCreceivetreatm
entIFN
na
0015b
Plunkett
etal35
USA
Pregnantwomenmeanage30ye
ars
1Screeningvsnoscreening70
(screened)or20
(unscreened)of
HCV-positive
swithmoderate
CHCreceivetreatm
ent
PegIFN+RBV
na
000011
1Screeningandtreatm
entasabove
plusCaesariandelive
ryna
00001
Stein
etal20
(Stein
etal20033334)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
Screeningvsnoscreening50
ofHCV-positive
swithmoderate
CHCreceivetreatm
entIFN+RBV
na
001003b
NHSRampD
HTA
Programme
UK
Genito-urinary
medicineclinic
attendeesmeanage36ye
ars
15
Screeningvsnoscreening50
ofHCV-positive
swithmoderate
CHCreceivetreatm
entIFN+RBV
na
000047b
aRangereportedin
theoriginalstudyforthefirstseco
ndandthirdye
ar
bCalculatedwithdata
intheoriginalpublication
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 247
Castelnuovo et al36 performed a decision-analytic cost-effectiveness study to evaluate screening (named lsquocase-findingrsquo)in patients attending general medical practice or special drugand alcohol services and in prisoners at reception with a focuson former IDUs Based on their analyses the authorsconcluded that screening in these target populations is likelyto be cost-effective despite some uncertainty around theacceptance of testing and treatment
Cost-effectiveness studies
Seven cost-effectiveness studies evaluating HCV screeningin different population settings were included in our review(table 2) Three studies were conducted in the UK202936 twoin France3032 and two in the USA3135
Studies varied in terms of target population study pers-pective time horizon discount rate and compared strategiesincluding screening and antiviral treatment modeFive studies2030ndash3235 evaluated populations at average risk
for Hepatitis C (HCV prevalence 1ndash38) Of those one studyevaluated HCV screening in asymptomatic average-risk adultsin the USA31 one study examined screening in the generalFrench population32 and another study analysed screening inpregnant women in the USA35 two studies consideredscreening in blood recipients3032 and one in generalGenito-urinary medicine clinic attendees20
Four studies20293236 evaluated the cost-effectiveness ofscreening in different populations at higher risk for HCV(HCV prevalence 7ndash80) Four studies evaluated HCVscreening in populations with a history of IDU in differentsettings20293236 two studies analysed the cost-effectiveness ofgeneral screening in attendees of special medical services2036
and one study evaluated HCV screening in prisoners atreception36
Most studies compared systematic screening (and antiviraltreatment for detected HCV-positives) to non-systematicscreening allowing for the possibility of spontaneouscase detection with subsequent antiviral treatment20313536
The percentage of HCV positives eligible for treatment variedSome studies compared screening and antiviral treatmentfor detected HCV positives to no screening and notreatment293032 The antiviral treatment regimens(interferoninterferon plus ribavirinpeginterferon plusribavirin) and algorithms (eg treat all HCV-positives oronly those with severe liver histology) varied Only threestudies203536 evaluated screening followed by peginterferonplus ribavirin the current recommended standard antiviraltherapy38ndash40
The incremental cost-effectiveness ratios (ICER) of HCVscreening vs no screening varied over a wide range (18 300ndash1 151 000EQALY if not dominated) depending on targetpopulation study perspective time horizon discount rate andcompared strategies including screening mode and antiviraltreatment strategies In summary HCV screening in popula-tions with an average HCV prevalence and in pregnant womenwas dominated by no screening Screening in blood recipientsyielded an ICER over 140 600ELYG and was considerednot to be cost-effective30 However this study had a timehorizon of 30 years instead of lifetime and used interferonmonotherapy as antiviral treatment option In contrast HCVscreening in populations with a high HCV prevalencesuch as current or former intravenous drug users was con-sidered cost-effective HCV screening in current andorformer intravenous drug users yielded discounted incre-mental cost-effectiveness ratios below 46 700EQALY2036
General HCV screening amongst members of specialmedical practices (140 500EQALY)20 or in prisoners atreception (30 200EQALY)36 were associated with higher
cost-effectiveness ratios compared to more targeted screening(eg screening only IDUs in these settings)Figure 1 shows the incremental ICER and ICUR ratios of
screening for different HCV prevalence and different antiviraltreatment strategies Most studies evaluated the ICERsICURsin populations with HCV prevalence above 10 Only fourstudies reported results for populations with a lower HCVprevalence Many studies evaluated screening followed byantiviral treatment with interferon or interferon plus ribavirinwhich are not current standard treatment options anymorePeginterferon plus ribavirin the recommended standardantiviral treatment yields more LYsQALYs gained and resultsin much lower ICERsICURs Therefore figure 1c and d showsICERsICURs for screening followed by treatment withpeginterferon plus ribavirin only The majority of thesestudies reported ICURs below 40 000EQALY gained (ICER50 000ELYG) in populations with HCV prevalence above10 and higher ICURs (77 000ndash1 150 000EQALY gained) inlow HCV prevalence populations (results from two studies)
Discussion
We performed a systematic review on the long-term effective-ness and cost-effectiveness of screening for HCV infectionDepending on HCV prevalence and risk selection mode
the incremental long-term effectiveness of HCV screening andearly treatment compared to no screening and standard carevaried from 00004 LYG (015 life-days gained) to 0066 LYG(24 life-days gained) and from 00001 QALY (004 quality-adjusted life-days gained) to 0072 QALY (26 quality-adjustedlife-days gained) To put these figures into perspective theycan be compared with other screening programs For examplebiennial cervical cancer screening compared to no screening isassociated with a gain of 92 life days Moving from a 2-year toa 1-year interval is associated with a gain of four life days41
Given 1 undetected HIV-prevalence one-time HIVscreening in US health care settings was reported to increaselife-expectancy by 39 days (29 quality-adjusted life days)Screening every 5 years would gain additional 097 days(070 quality-adjusted life days)42
It must be noted that these numbers reflect the averageincremental life expectancy per person screened This trans-lates to many persons with no gain and some persons withseveral years or decades gain in life expectancyThe incremental cost-effectiveness ratios varied over a wide
range depending on target population (eg HCV prevalenceage etc) study perspective time horizon discount rate andcompared strategies including screening settings and antiviraltreatment strategies Therefore the comparability of theresults is limitedHCV screening vs no screening resulted in ICURs ranging
from 18 300 to 1 151 000EQALY if screening was notdominated In the reviewed studies HCV screening wasconsidered cost-effective (ICURs below 40 000EQALY fortreatment with peginterferon plus ribavirin) in populationswith an elevated HCV prevalence such as intravenous drugusers General HCV screening in average-risk adults wasunlikely to be effective and cost-effectiveHowever cost-effectiveness should not be the main criterion
for the decision to implement HCV screening Given thesubstantial number of prevalent iatrogenic HCV-infected casesother ethical concepts such as fairness and equity may beconsidered as wellCost-effectiveness is depending on the willingness-to-pay in
a certain society which depends on several economical socialand political factors There is currently no general agreementacross countries about the cost-effectiveness threshold To givea measurement on the incremental cost-effectiveness ratios of
248 European Journal of Public Health
Table
2Disco
untedincrementalco
st-effectiveness-ratios(ICER)anddisco
untedincrementalco
st-utility-ratios(ICUR)forscreeningforhepatitisC
StudyCountry
CurrencyYear
Perspective
Disco
unt
rate
()
Comparator
TargetPopulation
ICER
(ELYG)
ICUR
(EQ
ALY
)
Castelnuovo
etal36
(ThompsonCoon
UKpound2004
NationalHealth
6(costs)15
(effects)
Systematicscreeningvsnosystematicscreening
(spontaneouspresentationto
screeningpossible)
Form
erIDUsgeneralcasemeanage37ye
ars49
HCV
preva
lence
30232
24858
etal37)
Services(N
HS)
HCV-positive
sreceivetreatm
entPegIFN+RBV
Generalpracticemeanage37ye
ars125
HCVpreva
lence
38633
23321
NHSRampD
HTA
Programme
Form
erandcu
rrentIDUsin
generalpracticemeanage
37ye
ars49
HCV
preva
lence
30194
24827
UK
Allpatients
assessedforHBVva
ccinationattendingdrugand
alcoholservicesmeanage37ye
ars68
HCV
preva
lence
28689
26365
(Screeningincludedgenerallecture
onHCV)
Prisoners
atreceptionmeanage37ye
ars16
HCVpreva
lence
50833
30231
(Screeningincludedlecture
withfocu
sonIDU
andrisk
ofHCV)
Prisoners
atreceptionmeanage37ye
ars42
HCVpreva
lence
40301
24813
JusotandColin30
France
FF1996Health
care
system
30ye
ars
time
Nodisco
unt
rate
ScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipientslt40ye
ars3
HCV
preva
lence
140674
mdash
horizo
nScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3
HCV
preva
lence
477654
mdash
ScreeningwithEIA3before
andaftertransfusion
(treatm
entsameasabove
)
Bloodrecipients
receivinghigh-volumetransfusions
3
HCV
preva
lence
144970
mdash
Lealetal29
UKpound1997na
6ScreeningvsnoscreeningHCV-positive
swithmoderate
IDUsin
contact
withdrugservices60
HCV
preva
lence
mdash119754
UK
toseve
reCHCreceivetreatm
entIFN
(IFN
+RBV)
(18267-34537a)
Loubiere
etal32
France
E1998Health
care
system
3ScreeningwithEIA3+EIA3vsnoscreening+notreatm
ent
50
ofCHCcasesand40
ofcirrhosiscasesreceive
treatm
entIFN+RBV
IDUs80
HCV
preva
lence
3881
mdash
ScreeningwithEIA3+PCRvsnoscreening+notreatm
ent
treatm
entasabove
9742
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
Patients
transfusedbefore
19917
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
243737
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
GeneralFrench
population12
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
5005
mdash
Plunkett
etal35
USA
US$
2003Health
care
system
3ScreeningvsnoscreeningHCV-positive
sreceivetreatm
ent
PegIFN+RBV
Pregnantwomen1
HCV
preva
lence
mdashNoscreening
dominant
Asabove
plusCaesariandelive
rymdash
1150976
Singeretal31
USA
US$
2001S
ocietal
3Screeningvsnoscreening20
ofHCV-positive
sreceive
treatm
entIFN+RBV
Asymptomatic
ave
ragerisk
adultsmeanage35ye
ars
38
HCV
preva
lence
mdashNoscreening
dominant
Stein
etal20
(Stein
etal3334)
UKpound2001
NationalHealth
6(costs)15
(effects)
Screeningvsnoscreening50
ofHCV-positive
swith
moderate
CHCreceivetreatm
entIFN+RBV(PegIFN+RBV)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
HCV
preva
lence
mdash46707(23598)
NHSRampD
HTA
Programme
Services(N
HS)
Allscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV(PegIFN+RBV)
Genito-urinary
medicineclinic
attendeesmeanage
36ye
ars15
HCVpreva
lence
mdash140471(77052)
UK
IDUsscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV
32
HCVpreva
lence
mdash45076
aDependingontreatm
entduration(24or48weeks)
andribavirindosage(1000or1200mgd)
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 249
well-accepted screening programs cytological screening forcervical cancer every 3 years compared to no screening costspound1800 per life year gained in the UK43 1400ELYG inGermany44 and 8400 US$LYG in the USA45 Screening blooddonors for HIV costs 14 000 US$LYG46 Given 1 undetectedHIV-prevalence one-time HIV screening in US health caresettings would result in 41 700 US$QALY screening every 5years 123 600 US$QALY42
In the absence of long-term clinical trials all results wereretrieved from decision-analytic studies which link diagnosticand clinical short-term outcomes (eg test sensitivity andspecificity or viral response) to clinical long-term outcomes(eg mortality and long-term quality of life)47 The includedstudies were heterogeneous in regard to health economicanalysis techniques (eg time horizons discounting etc)HCV population prevalence acquisition risk factors andantiviral therapy Therefore the outcomes in terms of lifeyears gained quality adjusted life years and incremental costeffectiveness ratios varied over a wide range However severalresults were logical and predictable for example screening ismore cost effective in higher prevalence or higher riskpopulationsmdasha result that has been reported for other diseasestoo4849
Like all decision-analytic models screening models mustsimplify the real world for more transparency and thepossibility to analyse specific research questions47 However
some methodological and structural model assumptions mayhave an important impact on clinical and economic outcomesand could lead to bias in favour for or against HCV screeningThus it is important to discuss some aspects essential fora valuable screening modelFirst it is important to allow for the possibility of
spontaneous case detection by symptoms with subsequentantiviral treatment in the non-screening strategy of any HCV-screening model Without these estimates the benefits of thescreening strategy are overestimated and outcomes are biasedin favour of the HCV-screening strategy Second the settingof antiviral treatment in both strategies is very important Notreatment in the non-screening strategy or lsquowait and treatcirrhosisrsquo vs lsquoscreen and treat all HCV-positive patientsrsquomay overestimate both the incremental benefits and costs ofscreening Therefore antiviral treatment should be consideredfor chronic HCV-patients (detected through screeningsymptoms or spontaneous presentation) in both strategiesaccording to recent treatment guidelines Third moststudies considered antiviral therapy with interferon plusribavirin20293132 and two studies used even interferonmonotherapy293032 Only three studies considered peginter-feron plus ribavirin203536 Having better treatment optionsand administering antiviral treatment according to genotype-specific guidelines with early treatment stop for patients notresponding would allow tailoring treatment efficiently which
Figure 1 Incremental cost-effectiveness ratio of screening compared to no screening in Euro per life year gained (EuroLYG) orquality-adjusted life-year gained (EuroQALY) for different HCV prevalence in the target population (a) ICER (in EuroLYG) ofHCV screening and different antiviral treatment (b) ICUR (in EuroQALY) of HCV screening and different antiviral treatment (c)ICER (in EuroLYG) of HCV screening and antiviral treatment with peginterferon plus ribavirin (d) ICUR (in EuroQALY) of HCVscreening and antiviral treatment with peginterferon plus ribavirin (Each point represents the ICERICUR of a specific targetpopulation and screeningtreatment strategy Multiple points may come from the same modelling study) IFN= interferonRBV= ribavirin PegIFN=peginterferon One point out of range of figure 1(d) 1 150 976QALY with 1 HCV prevalencePegIFN+RBV
250 European Journal of Public Health
would reduce adverse effects harms and antiviral treatmentcosts and improve the cost-effectiveness of HCV screening dueto better clinical and economic outcomes Fourth eligibilityof patients for and adherence to antiviral treatment shouldbe considered In particular any HCV-screening modelshould consider a lsquowait and seersquo strategy in the screeningarm because not all patients necessarily should or want to betreated immediately after HCV detection50 HCV screeningand watchful monitoring HCV-infected patients may be moreeffective and cost-effective than screening with immediatetreatment of all HCV-infected patients since a fraction ofHCV-infected patients may not develop fibrosis or cirrhosisduring their lifetime This is particularly important for theelderlyThe age at which HCV-infected patients are identified and
treated is a very important modelling factor as well Moststudies used an average age of 40 years for the evaluatedpopulation which may be adequate for patients with CHCwhich already developed symptoms However HCV screeningmay detect HCV-infected individuals earlier at significantlyyounger age In addition certain HCV-infected populationsat risk for advanced liver disease such as intravenous druguser or ethnic minority groups who have acquired HCViatrogenically in early childhood have a significantly youngeraverage age Thus in these cases benefits from early detectionand treatment may be underestimatedDiscounting costs and effects is important and affects ICERs
since the clinical and economic benefits of screening due toavoided cirrhosis and its sequelae occur in the distant futurewhereas the costs of screening and antiviral treatment occurmuch earlier One study30 in France did not discount at all andtwo studies 2036 conducted in the UK used different discountrates for costs and effects The ICERs increased significantly insensitivity analyses when cost and effects were equallydiscounted with 35 annually (eg from 16 514 poundQALY to33 235 poundQALY36)Most studies used a lifelong time horizon for their analyses
which is the most adequate timeframe to use As benefits thatoccur far in the future will not be considered within shortertime horizons estimated cost-effectiveness ratios may be toohigh One study used a 30 year time horizon30 As cirrhosisand its complications develop slowly within 10ndash30 years eventhis time horizon may be too short and benefits may beunderestimatedAll studies included in this review take into account the
natural history of chronic Hepatitis C disease progression andmortality from CHC-related complications Only one studyused the natural history of chronic Hepatitis B diseaseprogression as at that time no information existed regardingHepatitis C progression However it was not always clearwhether slower progression rates were considered for screenedpopulations tending to present histological milder Hepatitis Ccompared to non-screened populations mostly detected bysymptoms Several studies reported that patients with mildCHC and normal ALT levels may have a reduced risk ofprogression to cirrhosis compared to patients with more severehistology or elevated ALT levels751ndash54 Furthermore analysesfor CHC patients co-infected with HIV should assume higherprogression rates to CHC-related liver diseases than analysesin non-co-infected CHC patients5556In addition most studies used age- and gender-specific
mortality rates of the general population for the backgroundmortality for CHC patients However background mortality isoften higher due to co-morbidity from other diseases such asHIV- or HBV-coinfection or in case of IDUs from continua-tion of or relapse to drug abuse Even patients with moderateCHC or cirrhosis that respond to antiviral treatment continue
to have an increased risk of developing hepatocellularcarcinoma which is associated with significant mortalityOverall this review discovered many study limitations and
the need for further systematic research in HCV screeningParticularly health-economic studies in population with lowor average HCV prevalence evaluating HCV screeningcombined with different strategies of monitoring and antiviraltreatment of HCV-positives according to current treatmentstandard are requiredFinally it must be mentioned that due to different
epidemiology health care systems disease managementpractice patterns and treatment costs in different Europeancountries results cannot be generalized and are difficult if notimpossible to be directly transferred from one country toanother Further research should focus on the development ofa Pan-European Hepatitis C screening model that fulfils thequality criteria discussed above and which can be adapted tothe context of the different health care systems and countrieswithin Europe
Conclusion
Although HCV screening fulfils general population screeningcriteria specific well-formulated national programs forHepatitis C screening are lacking in most European countriesBased on current evidence HCV screening and early treatmenthas the potential to improve average life-expectancy butshould focus on populations with elevated HCV prevalence tobe cost-effective Further research is needed to investigate thelong-term health-economic impact of HCV screening whencombined with appropriate monitoring and treatmentstrategies in different European health care systems Furtherassessments should focus on determining optimal targetgroups and settings that yield effective and cost-effectiveHCV screening strategies
Acknowledgements
We thank the members of the PanEuropean Hepatitis C ExpertPanel for providing local information and reviewing the resultsof our study Maria Buti MD Hospital General UniversitarioVall de Hebron Barcelona Spain Florin Caruntu Matei BalsInfectious Disease Institute Bucharest and Carol DavilaMedicine and Pharmacy University Bucharest RomaniaCharles Gore The Hepatitis C Trust London UK Scott DHolmberg MD MPH Epidemiology and Surveillance BranchDivision of Viral Hepatitis Prevention NCHHSTP Centers forDisease Control and Prevention Atlanta GA USA NadinePiorkowsky The European Liver Patients Association (ELPA)Germany Prof William Rosenberg Institute of HepatologyUniversity College London UK However the authors aloneare responsible for the results reported and views expressed inthe paper The authors had complete and independent controlover study design analysis and interpretation of data reportwriting and publication regardless of results
Funding
This project was supported in part by an unrestrictededucational grant from Hoffmann La-Roche Ltd BaselSwitzerland
Conflicts of interest NM has received travel support fromHoffmann La-Roche Ltd to present preliminary results of thestudy to different audiences US has received healthtechnology assessment research grants from the GermanFederal Ministry of Health and the Austrian Academy of
Cost-effectiveness of HCV-screening 251
Sciences and unrestricted research grants from ScheringPlough and Roche
Key points
Although HCV screening fulfils general populationscreening criteria specific well-formulated nationalpublic health programs for hepatitis C screening arelacking in most European countries
According to this review HCV screening with earlytreatment has the potential to improve averagelife-expectancy but should focus on populationswith elevated HCV prevalence to be cost-effectiveAppropriate target groups could be selected based onrisk factor profiles
Appropriate monitoring and treatment strategiesfor detected early disease may improve the cost-effectiveness of HCV screening
In view of the multitude of iatrogenic infectionshowever cost-effectiveness may not be the onlydecision criterion for the implementation of HCVscreening Aspects like fairness might be considered aswell
Further research should focus on the public-healthimpact of HCV screening when combined withappropriate monitoring and treatment strategies andon determining optimal target groups and settings
References
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Kretzschmar M et al editors Hepatitis C and injecting drug use
Luxembourg European Monitoring Centre for Drugs and Drug Addiction
2006 91ndash135
2 European Centre for Disease Prevention and Control (ECDC) Annual
epidemiologic report on communicable diseases in Europe 2007 http
wwwecdceuropaeu (date last accessed 28 June 2007)
3 Rantala M van de Laar MJ Surveillance and epidemiology of hepatitis B and
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4 Alter H Seeff L Recovery persistence and sequelae in hepatitis C virus
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20002017ndash35
5 Anonymous EASL international consensus conference on hepatitis C
Paris 26ndash27 February 1999 Consensus statement J Hepatol
199931(Suppl 1)3ndash8
6 Dore GJ Freeman AJ Law M Kaldor JM Is severe liver disease a common
outcome for people with chronic hepatitis C J Gastroenterol Hepatol
200217423ndash30
7 Freeman A Dore G Law M et al Estimating progression to cirrhosis in
chronic hepatitis C virus infection Hepatology 200134809ndash16
8 Freeman AJ Law MG Kaldor JM Dore GJ Predicting progression
to cirrhosis in chronic hepatitis C virus infection J Viral Hepat
200310285ndash93
9 Hopf U Moller B Kuther D et al Long-term follow-up of posttransfusion
and sporadic chronic hepatitis non-A non-B and frequency of circulating
antibodies to hepatitis C virus (HCV) J Hepatol 19901069ndash76
10 Koretz R Abbey H Coleman E Gitnick G Non-A non-B post-transfusion
hepatitis Looking back in the second decade Ann Intern Med
1993119110ndash5
11 Mattsson L Outcome of acute symptomatic non-A non-B hepatitis
a 13-year follow-up study of hepatitis C virus markers Liver
199313274ndash8
12 Tremolada F Casarin C Alberti A et al Long-term follow-up of non-A
non-B (type C) post-transfusion hepatitis J Hepatol 199216273ndash81
13 World Health Organization (WHO) Global surveillance and control of
hepatitis C Report of a WHO consultation organized in collaboration with
the Viral Hepatitis Prevention Board Antwerp Belgium J Viral Hepatitis
1999635ndash47
14 Wilson J Jungner Y Principles and practice of mass screening for disease
Bol Oficina Sanit Panam 196865281ndash393
15 Wilson J The evaluation of the worth of early disease detection J R Coll Gen
Pract 196816(Suppl 2)48ndash57
16 Brady B Siebert U Sroczynski G et al Pegylated interferon combined with
ribavirin for chronic hepatitis C virus infection an economic evaluation
[Technology Report No 82] Ottawa Canadian Agency for Drugs and
Technologies in Health 2007
17 Wright M Grieve R Roberts J Main J Thomas HC on behalf of the UK
Mild Hepatitis C Trial Investigators Health benefits of antiviral therapy for
mild chronic hepatitis C randomised controlled trial and economic
evaluation Health Technol Assess 2006101ndash132
18 Maheshwari A Ray S Thuluvath PJ Acute hepatitis C Lancet
2008372321ndash32
19 Jullien-Depradeux AM Bloch J Le Quellec-Nathan M Abenhaim A
National campaign against hepatitis C in France (1999ndash2002) Acta
Gastroenterol Belg 200265112ndash4
20 Stein K Dalziel K Walker A et al Screening for hepatitis C among injecting
drug users and in genitourinary medicine clinics systematic reviews of
effectiveness modelling study and national survey of current practice
Health Technol Assess 200261ndash122
21 Department of HealthGeneral Health Protection Hepatitis C Action Plan
for England July 2004 Available at wwwdhgovukpublications (date last
accessed 12 November 2006
22 European Liver Patient Association (ELPA) European Parliament demands
EU-wide action on Hepatitis C 2007 httpwwwelpaorg (date last accessed
15 May 2007)
23 European Liver Patient Association (ELPA) Promoting Hepatitis C Screening
in Europe 2007 httpwwwelpaorg (date last accessed 8 May 2008)
24 Shepherd J Brodin HFT Cave CB et al Clinical- and cost-effectiveness of
pegylated interferon alfa in the treatment of chronic hepatitis C a systematic
review and economic evaluation Int J Technol Assess Health Care
20052147ndash54
25 Siebert U Sroczynski G on behalf of the German Hepatitis C Model
(GEHMO) Group and the HTA Expert Panel on Hepatitis C Antiviral
therapy for patients with chronic hepatitis C in Germany Evaluation of
effectiveness and cost-effectiveness of initial combination therapy with
InterferonPeginterferon plus Ribavirin Series of the German Institute for
Medical Documentation and Information commissioned by the Federal
Ministry of Health and Social Security Cologne DIMDI 2003
26 Organisation for Economic Co-operation and Development (OECD) Gross
domestic product purchasing power parities 2006 httpwwwoecdorg
27 German Federal Statistical Office German Consumer Price Index (CPI) 2006
httpwwwdestatisde
28 Population Division of the Department of Economic and Social Affairs of the
United Nations Secretariat World population prospects the 2006 revision and
world urbanization prospects the 2005 revision httpesaunorgunpp
29 Leal P Stein K Rosenberg W What is the cost utility of screening for
hepatitis C virus (HCV) in intravenous drug users J Med Screen
19996124ndash31
30 Jusot JF Colin C Cost-effectiveness analysis of strategies for hepatitis C
screening in French blood recipients Eur J Public Health 200111373ndash9
31 Singer ME Younossi ZM Cost effectiveness of screening for hepatitis C virus
in asymptomatic average-risk adults Am J Med 2001111614ndash21
32 Loubiere S Rotily M Moatti JP Prevention could be less cost-effective than
cure the case of hepatitis C screening policies in France Int J Technol Assess
Health Care 200319632ndash45
33 Stein K Dalziel K Walker A et al Screening for hepatitis C in genito-urinary
medicine clinics a cost utility analysis J Hepatol 200339814ndash25
34 Stein K Dalziel K Walker A et al Screening for Hepatitis C in injecting drug
users a cost utility analysis J Public Health 20042661ndash71
252 European Journal of Public Health
35 Plunkett BA Grobman WA Routine hepatitis C virus screening in
pregnancy a cost-effectiveness analysis Am J Obstet Gynecol
20051921153ndash61
36 Castelnuovo E Thompson-Coon J Pitt M et al The cost-effectiveness of
testing for hepatitis C in former injecting drug users Health Technol Assess
200610 iiindashiv ixndashxii 1ndash93
37 Thompson Coon J Castelnuovo E Pitt M et al Case finding for hepatitis C
in primary care a cost utility analysis Fam Pract 200623393ndash406
38 Sherman M Shafran S Burak K et al Management of chronic hepatitis C
consensus guidelines Can J Gastroenterol 200721(Suppl C)25Cndash34C
39 NIH Consensus Statement National institutes of health consensus devel-
opment conference management of Hepatitis C 2002 - June 10ndash12 2002
Hepatology 200236(5 Suppl 1)S3ndash20
40 Zeuzem S Standard treatment of acute and chronic hepatitis C
Z Gastroenterol 200442714ndash9
41 Siebert U Sroczynski G Hillemanns P et al The German cervical cancer
screening model development and validation of a decision-analytic model
for cervical cancer screening in Germany Eur J Public Health
200616185ndash92
42 Sanders G Bayoumi A Sundaram V et al Cost-effectiveness of screening for
HIV in the era of highly active antiretroviral therapy N Engl J Med
2005352570ndash85
43 Payne N Chilcott J McGoogan E Liquid-based cytology in cervical
screening a rapid and systematic review Health Technol Assess 200041ndash73
44 Siebert U Muth C Sroczynski G et al Liquid-based preparation and
computer-assisted examination of cervical smears in cervical cancer screening
Clinical effectiveness economic evaluation and systematic decision analysis
Series of the German Institute for Medical Documentation and Information
commissioned by the Federal Ministry of Health and Social Security St
Augustin Asgard 2004
45 McCrory DC Matchar DB Evaluation of cervical cytology - systematic
review HTA Report Agency for Health Care Research and Quality (AHRQ)
Report No 5 1999
46 Tengs T Adams M Pliskin J et al Five-hundred life-saving interventions
and their cost-effectiveness Risk Anal 199515369ndash90
47 Siebert U When should decision-analytic modeling be used in the
economic evaluation of health care [Editorial] Eur J Health Econ
20034143ndash50
48 Shamir R Hernell O Leshno M Cost-effectiveness analysis of
screening for celiac disease in adult population Med Decis Making
200626282ndash93
49 Hayashino Y Shimbo T Tsujii S et al Cost-effectiveness of coronary artery
disease screening in asymptomatic patients with type 2 diabetes and other
atherogenic risk factors in Japan factors influencing on international
application of evidence-based guidelines Int J Cardiol 200711888ndash96
50 Wong JB Koff RS Watchful waiting with periodic liver biopsy versus
immediate empirical therapy for histologically mild chronic hepatitis C A
cost-effectiveness analysis Ann Intern Med 2000133665ndash75
51 Alberti A Morsica G Chemello L et al Hepatitis C viremia and liver
disease in symptom-free individuals with anti-HCV Lancet
1992340697ndash8
52 Alter H Conry-Cantilena C Melpolder J et al Hepatitis C in asymptomatic
blood donors Hepatology 199726(3 Suppl 1)29Sndash33S
53 Marcellin P Levy S Erlinger S Therapy of hepatitis C patients with normal
aminotransferase levels Hepatology 199726(3 Suppl 1)133Sndash6S
54 Mathurin P Moussalli J Cadranel J et al Slow progression rate of fibrosis in
hepatitis C virus patients with persistently normal alanine transaminase
activity Hepatology 199827868ndash72
55 Graham CS Baden LR Yu E et al Influence of human immunodeficiency
virus infection on the course of hepatitis C virus infection a meta-analysis
Clin Infect Dis 200133562ndash9
56 Soto B Sanchez-Quijano A Rodrigo L et al Human immunodeficiency
virus infection modifies the natural history of chronic parenterally-acquired
hepatitis C with an unusually rapid progression to cirrhosis J Hepatol
1997261ndash5
Received 14 September 2008 accepted 22 December 2008
Cost-effectiveness of HCV-screening 253
treatment options are costly and impose the burden of sideeffects162425 Therefore a thorough assessment of HCVscreening must consider all consequences for individuals andsociety during a sufficiently long time horizonIn this review we systematically evaluated the current
evidence on long-term effectiveness and cost-effectivenessof screening for Hepatitis C virus infection in differentpopulations
Methods
A systematic literature search was conducted using thedatabases Medline Cochrane Database of SystematicReviews Cochrane central register of controlled trials(CENTRAL) and the NHS databases abstracts of reviews ofeffects (DARE) Health technology assessment (HTA) andEconomic evaluation database (NHS EED) to identify studiesassessing the clinical and economic long-term consequencesof screening for Hepatitis C virus infection (HCV) The timehorizon of the literature search was limited to March 2007 Allreferences were imported into a literature database usinga literature management software program (EndNote 90Thomson ResearchSoft TM Thomson Corporation StamfordCT USA)First reference titles and abstracts were screened for
relevant articles In a second step studies were selected basedon a priori inclusion and exclusion criteria after reading thefull text document We included health technology assessment(HTA) reports systematic reviews long-term clinical trialsfull health economic studies and decision-analytic modellingstudies assessing the impact of screening for Hepatitis C virusinfections As clinical and economic consequences of screeningoccur over a long time horizon we only included studies thatreported both long-term effectiveness and cost effectiveness interms of life-years gained (LYG) quality-adjusted life-yearsgained (QALY) lifetime cost per life-year gained (CostLYG)or cost per quality-adjusted life-year gained (CostQALY)We excluded studies in languages other than English orGerman editorials letters abstracts unsystematic reviewsstudies reporting only short-term effectiveness data (egsustained virological response SVR) studies assessing screen-ing of blood donations or serological testing during antiviraltreatment We also excluded studies that did not reportsufficient data to derive incremental effectiveness and cost-effectiveness ratios or cost-effectiveness studies reporting onlycosts per HCV case detectedWe systematically extracted the results from the publications
and summarized the information in evidence tables reportingclinical and economic outcomesIf necessary and possible we recalculated the incremental
cost-effectiveness ratios (ICER) or incremental cost-utilityratios (ICUR) from the data reported in the publicationTo facilitate comparison across countries and to enable othercountries to transfer our results into their currencies all costswere converted to 2005 Euro (E) using gross domestic productpurchasing power parities (GDPPP) (conversion to Euro ofthe index year) and the German Consumer Price Index(CPI) (inflation to the year 2005)2627 Germany was used asthe reference country for the cost conversion because it is thecountry with the largest population in Europe28
Results
Literature search
A total of 127 unique references were retrieved Tenpublications2029ndash37 including two HTA reports 2036 assessing
lifetime health effects and costs of screening for Hepatitis Cmet the inclusion criteria No long-term clinical trial assessingthe long-term effectiveness (eg mortality) of screening forHepatitis C virus infection and early HCV-treatment wasidentifiedTwo publications by Stein et al3334 reported the cost-
effectiveness results of a decision-analytic model performedwithin an HTA report conducted by the National Institute forHealth and Clinical Excellence (NICE)20 Thompson Coonet al37 reported the cost-effectiveness results of a decision-analytic model performed within an HTA report conductedby the NHS RampD HTA Program36 Only the original data fromthe HTA reports were considered leaving seven studiesin the review
Long-term effectiveness
In the absence of clinical trials meta-analyses and healthtechnology assessment reports evaluating the long-termeffectiveness of HCV screening we based our results ondecision-analytic modelling studies that included an analysis oflong-term effectiveness of screening for Hepatitis C virusinfection and early HCV-treatment in terms of undiscountedlife years andor quality-adjusted life years gained comparedto no screening and standard careFive out of seven cost-effectiveness studies reported undis-
counted life years andor quality-adjusted life years gained forscreening and early HCV-treatment compared to no screeningand standard care (table 1)2029303536
The values for life years gained due to screening andearly treatment varied from 00004 LYG (015 life days) forscreening blood recipients to 0066 LYG (241 life days) forscreening all patients assessed for HBV vaccination attendingdrug and alcohol services QALYs varied from no gain forscreening in pregnant women to 0072 QALYs (ie 26 quality-adjusted life days) for screening in patients assessed for HBVvaccination attending drug and alcohol services Screening inpopulations with elevated HCV prevalence (eg IDU) wasmore effective in terms of life-years or QALYs gained Studiesreported 0036ndash0066 LYG (131ndash241 life days) for populationswith 42ndash68 HCV prevalence (0010ndash0072 QALYs37ndash263quality-adjusted life days 32ndash68 HCV prevalence) vs00004ndash0013 LYG (01ndash47 life days) for populations with3ndash16 HCV prevalence (0ndash0022 QALYs0ndash80 quality-adjusted life days 1ndash16 HCV prevalence)
Long-term cost-effectiveness
Health technology assessment reports
Two HTA reports were included One summarizedresults from economic studies evaluating HCV-screeningprogrammes and both HTA reports conducted a cost-effectiveness analysisStein et al 20 systematically reviewed the evidence from
health economic studies evaluating HCV-screening pro-grammes All reviewed studies had methodological limitationsand the results were of limited transferability to the UKcontext Based on their decision-analytic results the authorsconcluded that screening for Hepatitis C in intravenous drugusers in contact with medical services may be moderately cost-effective However the authors recommend interpreting theirresults with caution because of substantial uncertainty aroundthe acceptability of screening the adherence to treatment andthe simple nature of the model General screening in genito-urinary medicine (GUM) clinics is less cost-effective andassociated with greater uncertainty than screening IDUs incontact with medical services
246 European Journal of Public Health
Table
1Lo
ng-term
effectiveness
ofscreeningforhepatitisCundisco
untedlife
years
andorQALY
StudyCountry
Population
HCV
prevalence
()
ScreeningTreatm
ent
Incremental
life
years
(LYG)
Incremental
quality-adjusted
life
years
(QALY
)
Castelnuovo
etal36
Form
erIDUsmeanage37ye
ars
49
Systematicscreeningvsnosystematicscreening(spontaneous
0058
0071
(ThompsonCoonetal37)
Generalpracticemeanage37ye
ars
125
presentationto
screeningpossible)HCV-positive
sreceive
0010
0017
NHSRampD
HTA
Programme
UK
Form
erandcu
rrentIDUsin
generalpracticemean
age37ye
ars
49
treatm
entPegIFN+RBV
0036
0071
Allpatients
assessedforHBVva
ccinationattending
drugandalcoholservicesmeanage37ye
ars
68
0066
0072
Prisoners
atreceptionmeanage37ye
ars
(general
counseling)
16
0013
0022
Prisoners
atreceptionmeanage37ye
ars
(counseling
withIDU
focu
s)
42
0036
0058
JusotandColin30
France
Bloodrecipientslt40ye
ars
3ScreeningwithEIA3aftertransfusiontreatm
entforHCV-positive
s
withKnodellscore
5IFN
vsnoscreening+nomedicaltherapy
00085
na
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3ScreeningwithEIA3aftertransfusiontreatm
entforHCV-positive
s
withKnodellscore
5IFN
vsnoscreening+nomedicaltherapy
00004
na
Bloodrecipients
receivinghigh-volumetransfusions
3ScreeningwithEIA3before
andaftertransfusion(treatm
entsame
asabove
)
00030ndash0
0047a
na
Lealetal29
UK
IDUsin
contact
withdrugservicesmeanagena
60
ScreeningvsnoscreeningHCV-positive
swithmoderate
toseve
re
CHCreceivetreatm
entIFN
na
0015b
Plunkett
etal35
USA
Pregnantwomenmeanage30ye
ars
1Screeningvsnoscreening70
(screened)or20
(unscreened)of
HCV-positive
swithmoderate
CHCreceivetreatm
ent
PegIFN+RBV
na
000011
1Screeningandtreatm
entasabove
plusCaesariandelive
ryna
00001
Stein
etal20
(Stein
etal20033334)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
Screeningvsnoscreening50
ofHCV-positive
swithmoderate
CHCreceivetreatm
entIFN+RBV
na
001003b
NHSRampD
HTA
Programme
UK
Genito-urinary
medicineclinic
attendeesmeanage36ye
ars
15
Screeningvsnoscreening50
ofHCV-positive
swithmoderate
CHCreceivetreatm
entIFN+RBV
na
000047b
aRangereportedin
theoriginalstudyforthefirstseco
ndandthirdye
ar
bCalculatedwithdata
intheoriginalpublication
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 247
Castelnuovo et al36 performed a decision-analytic cost-effectiveness study to evaluate screening (named lsquocase-findingrsquo)in patients attending general medical practice or special drugand alcohol services and in prisoners at reception with a focuson former IDUs Based on their analyses the authorsconcluded that screening in these target populations is likelyto be cost-effective despite some uncertainty around theacceptance of testing and treatment
Cost-effectiveness studies
Seven cost-effectiveness studies evaluating HCV screeningin different population settings were included in our review(table 2) Three studies were conducted in the UK202936 twoin France3032 and two in the USA3135
Studies varied in terms of target population study pers-pective time horizon discount rate and compared strategiesincluding screening and antiviral treatment modeFive studies2030ndash3235 evaluated populations at average risk
for Hepatitis C (HCV prevalence 1ndash38) Of those one studyevaluated HCV screening in asymptomatic average-risk adultsin the USA31 one study examined screening in the generalFrench population32 and another study analysed screening inpregnant women in the USA35 two studies consideredscreening in blood recipients3032 and one in generalGenito-urinary medicine clinic attendees20
Four studies20293236 evaluated the cost-effectiveness ofscreening in different populations at higher risk for HCV(HCV prevalence 7ndash80) Four studies evaluated HCVscreening in populations with a history of IDU in differentsettings20293236 two studies analysed the cost-effectiveness ofgeneral screening in attendees of special medical services2036
and one study evaluated HCV screening in prisoners atreception36
Most studies compared systematic screening (and antiviraltreatment for detected HCV-positives) to non-systematicscreening allowing for the possibility of spontaneouscase detection with subsequent antiviral treatment20313536
The percentage of HCV positives eligible for treatment variedSome studies compared screening and antiviral treatmentfor detected HCV positives to no screening and notreatment293032 The antiviral treatment regimens(interferoninterferon plus ribavirinpeginterferon plusribavirin) and algorithms (eg treat all HCV-positives oronly those with severe liver histology) varied Only threestudies203536 evaluated screening followed by peginterferonplus ribavirin the current recommended standard antiviraltherapy38ndash40
The incremental cost-effectiveness ratios (ICER) of HCVscreening vs no screening varied over a wide range (18 300ndash1 151 000EQALY if not dominated) depending on targetpopulation study perspective time horizon discount rate andcompared strategies including screening mode and antiviraltreatment strategies In summary HCV screening in popula-tions with an average HCV prevalence and in pregnant womenwas dominated by no screening Screening in blood recipientsyielded an ICER over 140 600ELYG and was considerednot to be cost-effective30 However this study had a timehorizon of 30 years instead of lifetime and used interferonmonotherapy as antiviral treatment option In contrast HCVscreening in populations with a high HCV prevalencesuch as current or former intravenous drug users was con-sidered cost-effective HCV screening in current andorformer intravenous drug users yielded discounted incre-mental cost-effectiveness ratios below 46 700EQALY2036
General HCV screening amongst members of specialmedical practices (140 500EQALY)20 or in prisoners atreception (30 200EQALY)36 were associated with higher
cost-effectiveness ratios compared to more targeted screening(eg screening only IDUs in these settings)Figure 1 shows the incremental ICER and ICUR ratios of
screening for different HCV prevalence and different antiviraltreatment strategies Most studies evaluated the ICERsICURsin populations with HCV prevalence above 10 Only fourstudies reported results for populations with a lower HCVprevalence Many studies evaluated screening followed byantiviral treatment with interferon or interferon plus ribavirinwhich are not current standard treatment options anymorePeginterferon plus ribavirin the recommended standardantiviral treatment yields more LYsQALYs gained and resultsin much lower ICERsICURs Therefore figure 1c and d showsICERsICURs for screening followed by treatment withpeginterferon plus ribavirin only The majority of thesestudies reported ICURs below 40 000EQALY gained (ICER50 000ELYG) in populations with HCV prevalence above10 and higher ICURs (77 000ndash1 150 000EQALY gained) inlow HCV prevalence populations (results from two studies)
Discussion
We performed a systematic review on the long-term effective-ness and cost-effectiveness of screening for HCV infectionDepending on HCV prevalence and risk selection mode
the incremental long-term effectiveness of HCV screening andearly treatment compared to no screening and standard carevaried from 00004 LYG (015 life-days gained) to 0066 LYG(24 life-days gained) and from 00001 QALY (004 quality-adjusted life-days gained) to 0072 QALY (26 quality-adjustedlife-days gained) To put these figures into perspective theycan be compared with other screening programs For examplebiennial cervical cancer screening compared to no screening isassociated with a gain of 92 life days Moving from a 2-year toa 1-year interval is associated with a gain of four life days41
Given 1 undetected HIV-prevalence one-time HIVscreening in US health care settings was reported to increaselife-expectancy by 39 days (29 quality-adjusted life days)Screening every 5 years would gain additional 097 days(070 quality-adjusted life days)42
It must be noted that these numbers reflect the averageincremental life expectancy per person screened This trans-lates to many persons with no gain and some persons withseveral years or decades gain in life expectancyThe incremental cost-effectiveness ratios varied over a wide
range depending on target population (eg HCV prevalenceage etc) study perspective time horizon discount rate andcompared strategies including screening settings and antiviraltreatment strategies Therefore the comparability of theresults is limitedHCV screening vs no screening resulted in ICURs ranging
from 18 300 to 1 151 000EQALY if screening was notdominated In the reviewed studies HCV screening wasconsidered cost-effective (ICURs below 40 000EQALY fortreatment with peginterferon plus ribavirin) in populationswith an elevated HCV prevalence such as intravenous drugusers General HCV screening in average-risk adults wasunlikely to be effective and cost-effectiveHowever cost-effectiveness should not be the main criterion
for the decision to implement HCV screening Given thesubstantial number of prevalent iatrogenic HCV-infected casesother ethical concepts such as fairness and equity may beconsidered as wellCost-effectiveness is depending on the willingness-to-pay in
a certain society which depends on several economical socialand political factors There is currently no general agreementacross countries about the cost-effectiveness threshold To givea measurement on the incremental cost-effectiveness ratios of
248 European Journal of Public Health
Table
2Disco
untedincrementalco
st-effectiveness-ratios(ICER)anddisco
untedincrementalco
st-utility-ratios(ICUR)forscreeningforhepatitisC
StudyCountry
CurrencyYear
Perspective
Disco
unt
rate
()
Comparator
TargetPopulation
ICER
(ELYG)
ICUR
(EQ
ALY
)
Castelnuovo
etal36
(ThompsonCoon
UKpound2004
NationalHealth
6(costs)15
(effects)
Systematicscreeningvsnosystematicscreening
(spontaneouspresentationto
screeningpossible)
Form
erIDUsgeneralcasemeanage37ye
ars49
HCV
preva
lence
30232
24858
etal37)
Services(N
HS)
HCV-positive
sreceivetreatm
entPegIFN+RBV
Generalpracticemeanage37ye
ars125
HCVpreva
lence
38633
23321
NHSRampD
HTA
Programme
Form
erandcu
rrentIDUsin
generalpracticemeanage
37ye
ars49
HCV
preva
lence
30194
24827
UK
Allpatients
assessedforHBVva
ccinationattendingdrugand
alcoholservicesmeanage37ye
ars68
HCV
preva
lence
28689
26365
(Screeningincludedgenerallecture
onHCV)
Prisoners
atreceptionmeanage37ye
ars16
HCVpreva
lence
50833
30231
(Screeningincludedlecture
withfocu
sonIDU
andrisk
ofHCV)
Prisoners
atreceptionmeanage37ye
ars42
HCVpreva
lence
40301
24813
JusotandColin30
France
FF1996Health
care
system
30ye
ars
time
Nodisco
unt
rate
ScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipientslt40ye
ars3
HCV
preva
lence
140674
mdash
horizo
nScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3
HCV
preva
lence
477654
mdash
ScreeningwithEIA3before
andaftertransfusion
(treatm
entsameasabove
)
Bloodrecipients
receivinghigh-volumetransfusions
3
HCV
preva
lence
144970
mdash
Lealetal29
UKpound1997na
6ScreeningvsnoscreeningHCV-positive
swithmoderate
IDUsin
contact
withdrugservices60
HCV
preva
lence
mdash119754
UK
toseve
reCHCreceivetreatm
entIFN
(IFN
+RBV)
(18267-34537a)
Loubiere
etal32
France
E1998Health
care
system
3ScreeningwithEIA3+EIA3vsnoscreening+notreatm
ent
50
ofCHCcasesand40
ofcirrhosiscasesreceive
treatm
entIFN+RBV
IDUs80
HCV
preva
lence
3881
mdash
ScreeningwithEIA3+PCRvsnoscreening+notreatm
ent
treatm
entasabove
9742
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
Patients
transfusedbefore
19917
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
243737
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
GeneralFrench
population12
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
5005
mdash
Plunkett
etal35
USA
US$
2003Health
care
system
3ScreeningvsnoscreeningHCV-positive
sreceivetreatm
ent
PegIFN+RBV
Pregnantwomen1
HCV
preva
lence
mdashNoscreening
dominant
Asabove
plusCaesariandelive
rymdash
1150976
Singeretal31
USA
US$
2001S
ocietal
3Screeningvsnoscreening20
ofHCV-positive
sreceive
treatm
entIFN+RBV
Asymptomatic
ave
ragerisk
adultsmeanage35ye
ars
38
HCV
preva
lence
mdashNoscreening
dominant
Stein
etal20
(Stein
etal3334)
UKpound2001
NationalHealth
6(costs)15
(effects)
Screeningvsnoscreening50
ofHCV-positive
swith
moderate
CHCreceivetreatm
entIFN+RBV(PegIFN+RBV)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
HCV
preva
lence
mdash46707(23598)
NHSRampD
HTA
Programme
Services(N
HS)
Allscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV(PegIFN+RBV)
Genito-urinary
medicineclinic
attendeesmeanage
36ye
ars15
HCVpreva
lence
mdash140471(77052)
UK
IDUsscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV
32
HCVpreva
lence
mdash45076
aDependingontreatm
entduration(24or48weeks)
andribavirindosage(1000or1200mgd)
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 249
well-accepted screening programs cytological screening forcervical cancer every 3 years compared to no screening costspound1800 per life year gained in the UK43 1400ELYG inGermany44 and 8400 US$LYG in the USA45 Screening blooddonors for HIV costs 14 000 US$LYG46 Given 1 undetectedHIV-prevalence one-time HIV screening in US health caresettings would result in 41 700 US$QALY screening every 5years 123 600 US$QALY42
In the absence of long-term clinical trials all results wereretrieved from decision-analytic studies which link diagnosticand clinical short-term outcomes (eg test sensitivity andspecificity or viral response) to clinical long-term outcomes(eg mortality and long-term quality of life)47 The includedstudies were heterogeneous in regard to health economicanalysis techniques (eg time horizons discounting etc)HCV population prevalence acquisition risk factors andantiviral therapy Therefore the outcomes in terms of lifeyears gained quality adjusted life years and incremental costeffectiveness ratios varied over a wide range However severalresults were logical and predictable for example screening ismore cost effective in higher prevalence or higher riskpopulationsmdasha result that has been reported for other diseasestoo4849
Like all decision-analytic models screening models mustsimplify the real world for more transparency and thepossibility to analyse specific research questions47 However
some methodological and structural model assumptions mayhave an important impact on clinical and economic outcomesand could lead to bias in favour for or against HCV screeningThus it is important to discuss some aspects essential fora valuable screening modelFirst it is important to allow for the possibility of
spontaneous case detection by symptoms with subsequentantiviral treatment in the non-screening strategy of any HCV-screening model Without these estimates the benefits of thescreening strategy are overestimated and outcomes are biasedin favour of the HCV-screening strategy Second the settingof antiviral treatment in both strategies is very important Notreatment in the non-screening strategy or lsquowait and treatcirrhosisrsquo vs lsquoscreen and treat all HCV-positive patientsrsquomay overestimate both the incremental benefits and costs ofscreening Therefore antiviral treatment should be consideredfor chronic HCV-patients (detected through screeningsymptoms or spontaneous presentation) in both strategiesaccording to recent treatment guidelines Third moststudies considered antiviral therapy with interferon plusribavirin20293132 and two studies used even interferonmonotherapy293032 Only three studies considered peginter-feron plus ribavirin203536 Having better treatment optionsand administering antiviral treatment according to genotype-specific guidelines with early treatment stop for patients notresponding would allow tailoring treatment efficiently which
Figure 1 Incremental cost-effectiveness ratio of screening compared to no screening in Euro per life year gained (EuroLYG) orquality-adjusted life-year gained (EuroQALY) for different HCV prevalence in the target population (a) ICER (in EuroLYG) ofHCV screening and different antiviral treatment (b) ICUR (in EuroQALY) of HCV screening and different antiviral treatment (c)ICER (in EuroLYG) of HCV screening and antiviral treatment with peginterferon plus ribavirin (d) ICUR (in EuroQALY) of HCVscreening and antiviral treatment with peginterferon plus ribavirin (Each point represents the ICERICUR of a specific targetpopulation and screeningtreatment strategy Multiple points may come from the same modelling study) IFN= interferonRBV= ribavirin PegIFN=peginterferon One point out of range of figure 1(d) 1 150 976QALY with 1 HCV prevalencePegIFN+RBV
250 European Journal of Public Health
would reduce adverse effects harms and antiviral treatmentcosts and improve the cost-effectiveness of HCV screening dueto better clinical and economic outcomes Fourth eligibilityof patients for and adherence to antiviral treatment shouldbe considered In particular any HCV-screening modelshould consider a lsquowait and seersquo strategy in the screeningarm because not all patients necessarily should or want to betreated immediately after HCV detection50 HCV screeningand watchful monitoring HCV-infected patients may be moreeffective and cost-effective than screening with immediatetreatment of all HCV-infected patients since a fraction ofHCV-infected patients may not develop fibrosis or cirrhosisduring their lifetime This is particularly important for theelderlyThe age at which HCV-infected patients are identified and
treated is a very important modelling factor as well Moststudies used an average age of 40 years for the evaluatedpopulation which may be adequate for patients with CHCwhich already developed symptoms However HCV screeningmay detect HCV-infected individuals earlier at significantlyyounger age In addition certain HCV-infected populationsat risk for advanced liver disease such as intravenous druguser or ethnic minority groups who have acquired HCViatrogenically in early childhood have a significantly youngeraverage age Thus in these cases benefits from early detectionand treatment may be underestimatedDiscounting costs and effects is important and affects ICERs
since the clinical and economic benefits of screening due toavoided cirrhosis and its sequelae occur in the distant futurewhereas the costs of screening and antiviral treatment occurmuch earlier One study30 in France did not discount at all andtwo studies 2036 conducted in the UK used different discountrates for costs and effects The ICERs increased significantly insensitivity analyses when cost and effects were equallydiscounted with 35 annually (eg from 16 514 poundQALY to33 235 poundQALY36)Most studies used a lifelong time horizon for their analyses
which is the most adequate timeframe to use As benefits thatoccur far in the future will not be considered within shortertime horizons estimated cost-effectiveness ratios may be toohigh One study used a 30 year time horizon30 As cirrhosisand its complications develop slowly within 10ndash30 years eventhis time horizon may be too short and benefits may beunderestimatedAll studies included in this review take into account the
natural history of chronic Hepatitis C disease progression andmortality from CHC-related complications Only one studyused the natural history of chronic Hepatitis B diseaseprogression as at that time no information existed regardingHepatitis C progression However it was not always clearwhether slower progression rates were considered for screenedpopulations tending to present histological milder Hepatitis Ccompared to non-screened populations mostly detected bysymptoms Several studies reported that patients with mildCHC and normal ALT levels may have a reduced risk ofprogression to cirrhosis compared to patients with more severehistology or elevated ALT levels751ndash54 Furthermore analysesfor CHC patients co-infected with HIV should assume higherprogression rates to CHC-related liver diseases than analysesin non-co-infected CHC patients5556In addition most studies used age- and gender-specific
mortality rates of the general population for the backgroundmortality for CHC patients However background mortality isoften higher due to co-morbidity from other diseases such asHIV- or HBV-coinfection or in case of IDUs from continua-tion of or relapse to drug abuse Even patients with moderateCHC or cirrhosis that respond to antiviral treatment continue
to have an increased risk of developing hepatocellularcarcinoma which is associated with significant mortalityOverall this review discovered many study limitations and
the need for further systematic research in HCV screeningParticularly health-economic studies in population with lowor average HCV prevalence evaluating HCV screeningcombined with different strategies of monitoring and antiviraltreatment of HCV-positives according to current treatmentstandard are requiredFinally it must be mentioned that due to different
epidemiology health care systems disease managementpractice patterns and treatment costs in different Europeancountries results cannot be generalized and are difficult if notimpossible to be directly transferred from one country toanother Further research should focus on the development ofa Pan-European Hepatitis C screening model that fulfils thequality criteria discussed above and which can be adapted tothe context of the different health care systems and countrieswithin Europe
Conclusion
Although HCV screening fulfils general population screeningcriteria specific well-formulated national programs forHepatitis C screening are lacking in most European countriesBased on current evidence HCV screening and early treatmenthas the potential to improve average life-expectancy butshould focus on populations with elevated HCV prevalence tobe cost-effective Further research is needed to investigate thelong-term health-economic impact of HCV screening whencombined with appropriate monitoring and treatmentstrategies in different European health care systems Furtherassessments should focus on determining optimal targetgroups and settings that yield effective and cost-effectiveHCV screening strategies
Acknowledgements
We thank the members of the PanEuropean Hepatitis C ExpertPanel for providing local information and reviewing the resultsof our study Maria Buti MD Hospital General UniversitarioVall de Hebron Barcelona Spain Florin Caruntu Matei BalsInfectious Disease Institute Bucharest and Carol DavilaMedicine and Pharmacy University Bucharest RomaniaCharles Gore The Hepatitis C Trust London UK Scott DHolmberg MD MPH Epidemiology and Surveillance BranchDivision of Viral Hepatitis Prevention NCHHSTP Centers forDisease Control and Prevention Atlanta GA USA NadinePiorkowsky The European Liver Patients Association (ELPA)Germany Prof William Rosenberg Institute of HepatologyUniversity College London UK However the authors aloneare responsible for the results reported and views expressed inthe paper The authors had complete and independent controlover study design analysis and interpretation of data reportwriting and publication regardless of results
Funding
This project was supported in part by an unrestrictededucational grant from Hoffmann La-Roche Ltd BaselSwitzerland
Conflicts of interest NM has received travel support fromHoffmann La-Roche Ltd to present preliminary results of thestudy to different audiences US has received healthtechnology assessment research grants from the GermanFederal Ministry of Health and the Austrian Academy of
Cost-effectiveness of HCV-screening 251
Sciences and unrestricted research grants from ScheringPlough and Roche
Key points
Although HCV screening fulfils general populationscreening criteria specific well-formulated nationalpublic health programs for hepatitis C screening arelacking in most European countries
According to this review HCV screening with earlytreatment has the potential to improve averagelife-expectancy but should focus on populationswith elevated HCV prevalence to be cost-effectiveAppropriate target groups could be selected based onrisk factor profiles
Appropriate monitoring and treatment strategiesfor detected early disease may improve the cost-effectiveness of HCV screening
In view of the multitude of iatrogenic infectionshowever cost-effectiveness may not be the onlydecision criterion for the implementation of HCVscreening Aspects like fairness might be considered aswell
Further research should focus on the public-healthimpact of HCV screening when combined withappropriate monitoring and treatment strategies andon determining optimal target groups and settings
References
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among injecting drug users in the European Union In Jager J Limburg W
Kretzschmar M et al editors Hepatitis C and injecting drug use
Luxembourg European Monitoring Centre for Drugs and Drug Addiction
2006 91ndash135
2 European Centre for Disease Prevention and Control (ECDC) Annual
epidemiologic report on communicable diseases in Europe 2007 http
wwwecdceuropaeu (date last accessed 28 June 2007)
3 Rantala M van de Laar MJ Surveillance and epidemiology of hepatitis B and
C in Europe ndash a review Euro Surveill 200813 Available online
httpwwweurosurveillanceorg (date last accessed 13 December 2008)
4 Alter H Seeff L Recovery persistence and sequelae in hepatitis C virus
infection a perspective on long-term outcome Semin Liver Dis
20002017ndash35
5 Anonymous EASL international consensus conference on hepatitis C
Paris 26ndash27 February 1999 Consensus statement J Hepatol
199931(Suppl 1)3ndash8
6 Dore GJ Freeman AJ Law M Kaldor JM Is severe liver disease a common
outcome for people with chronic hepatitis C J Gastroenterol Hepatol
200217423ndash30
7 Freeman A Dore G Law M et al Estimating progression to cirrhosis in
chronic hepatitis C virus infection Hepatology 200134809ndash16
8 Freeman AJ Law MG Kaldor JM Dore GJ Predicting progression
to cirrhosis in chronic hepatitis C virus infection J Viral Hepat
200310285ndash93
9 Hopf U Moller B Kuther D et al Long-term follow-up of posttransfusion
and sporadic chronic hepatitis non-A non-B and frequency of circulating
antibodies to hepatitis C virus (HCV) J Hepatol 19901069ndash76
10 Koretz R Abbey H Coleman E Gitnick G Non-A non-B post-transfusion
hepatitis Looking back in the second decade Ann Intern Med
1993119110ndash5
11 Mattsson L Outcome of acute symptomatic non-A non-B hepatitis
a 13-year follow-up study of hepatitis C virus markers Liver
199313274ndash8
12 Tremolada F Casarin C Alberti A et al Long-term follow-up of non-A
non-B (type C) post-transfusion hepatitis J Hepatol 199216273ndash81
13 World Health Organization (WHO) Global surveillance and control of
hepatitis C Report of a WHO consultation organized in collaboration with
the Viral Hepatitis Prevention Board Antwerp Belgium J Viral Hepatitis
1999635ndash47
14 Wilson J Jungner Y Principles and practice of mass screening for disease
Bol Oficina Sanit Panam 196865281ndash393
15 Wilson J The evaluation of the worth of early disease detection J R Coll Gen
Pract 196816(Suppl 2)48ndash57
16 Brady B Siebert U Sroczynski G et al Pegylated interferon combined with
ribavirin for chronic hepatitis C virus infection an economic evaluation
[Technology Report No 82] Ottawa Canadian Agency for Drugs and
Technologies in Health 2007
17 Wright M Grieve R Roberts J Main J Thomas HC on behalf of the UK
Mild Hepatitis C Trial Investigators Health benefits of antiviral therapy for
mild chronic hepatitis C randomised controlled trial and economic
evaluation Health Technol Assess 2006101ndash132
18 Maheshwari A Ray S Thuluvath PJ Acute hepatitis C Lancet
2008372321ndash32
19 Jullien-Depradeux AM Bloch J Le Quellec-Nathan M Abenhaim A
National campaign against hepatitis C in France (1999ndash2002) Acta
Gastroenterol Belg 200265112ndash4
20 Stein K Dalziel K Walker A et al Screening for hepatitis C among injecting
drug users and in genitourinary medicine clinics systematic reviews of
effectiveness modelling study and national survey of current practice
Health Technol Assess 200261ndash122
21 Department of HealthGeneral Health Protection Hepatitis C Action Plan
for England July 2004 Available at wwwdhgovukpublications (date last
accessed 12 November 2006
22 European Liver Patient Association (ELPA) European Parliament demands
EU-wide action on Hepatitis C 2007 httpwwwelpaorg (date last accessed
15 May 2007)
23 European Liver Patient Association (ELPA) Promoting Hepatitis C Screening
in Europe 2007 httpwwwelpaorg (date last accessed 8 May 2008)
24 Shepherd J Brodin HFT Cave CB et al Clinical- and cost-effectiveness of
pegylated interferon alfa in the treatment of chronic hepatitis C a systematic
review and economic evaluation Int J Technol Assess Health Care
20052147ndash54
25 Siebert U Sroczynski G on behalf of the German Hepatitis C Model
(GEHMO) Group and the HTA Expert Panel on Hepatitis C Antiviral
therapy for patients with chronic hepatitis C in Germany Evaluation of
effectiveness and cost-effectiveness of initial combination therapy with
InterferonPeginterferon plus Ribavirin Series of the German Institute for
Medical Documentation and Information commissioned by the Federal
Ministry of Health and Social Security Cologne DIMDI 2003
26 Organisation for Economic Co-operation and Development (OECD) Gross
domestic product purchasing power parities 2006 httpwwwoecdorg
27 German Federal Statistical Office German Consumer Price Index (CPI) 2006
httpwwwdestatisde
28 Population Division of the Department of Economic and Social Affairs of the
United Nations Secretariat World population prospects the 2006 revision and
world urbanization prospects the 2005 revision httpesaunorgunpp
29 Leal P Stein K Rosenberg W What is the cost utility of screening for
hepatitis C virus (HCV) in intravenous drug users J Med Screen
19996124ndash31
30 Jusot JF Colin C Cost-effectiveness analysis of strategies for hepatitis C
screening in French blood recipients Eur J Public Health 200111373ndash9
31 Singer ME Younossi ZM Cost effectiveness of screening for hepatitis C virus
in asymptomatic average-risk adults Am J Med 2001111614ndash21
32 Loubiere S Rotily M Moatti JP Prevention could be less cost-effective than
cure the case of hepatitis C screening policies in France Int J Technol Assess
Health Care 200319632ndash45
33 Stein K Dalziel K Walker A et al Screening for hepatitis C in genito-urinary
medicine clinics a cost utility analysis J Hepatol 200339814ndash25
34 Stein K Dalziel K Walker A et al Screening for Hepatitis C in injecting drug
users a cost utility analysis J Public Health 20042661ndash71
252 European Journal of Public Health
35 Plunkett BA Grobman WA Routine hepatitis C virus screening in
pregnancy a cost-effectiveness analysis Am J Obstet Gynecol
20051921153ndash61
36 Castelnuovo E Thompson-Coon J Pitt M et al The cost-effectiveness of
testing for hepatitis C in former injecting drug users Health Technol Assess
200610 iiindashiv ixndashxii 1ndash93
37 Thompson Coon J Castelnuovo E Pitt M et al Case finding for hepatitis C
in primary care a cost utility analysis Fam Pract 200623393ndash406
38 Sherman M Shafran S Burak K et al Management of chronic hepatitis C
consensus guidelines Can J Gastroenterol 200721(Suppl C)25Cndash34C
39 NIH Consensus Statement National institutes of health consensus devel-
opment conference management of Hepatitis C 2002 - June 10ndash12 2002
Hepatology 200236(5 Suppl 1)S3ndash20
40 Zeuzem S Standard treatment of acute and chronic hepatitis C
Z Gastroenterol 200442714ndash9
41 Siebert U Sroczynski G Hillemanns P et al The German cervical cancer
screening model development and validation of a decision-analytic model
for cervical cancer screening in Germany Eur J Public Health
200616185ndash92
42 Sanders G Bayoumi A Sundaram V et al Cost-effectiveness of screening for
HIV in the era of highly active antiretroviral therapy N Engl J Med
2005352570ndash85
43 Payne N Chilcott J McGoogan E Liquid-based cytology in cervical
screening a rapid and systematic review Health Technol Assess 200041ndash73
44 Siebert U Muth C Sroczynski G et al Liquid-based preparation and
computer-assisted examination of cervical smears in cervical cancer screening
Clinical effectiveness economic evaluation and systematic decision analysis
Series of the German Institute for Medical Documentation and Information
commissioned by the Federal Ministry of Health and Social Security St
Augustin Asgard 2004
45 McCrory DC Matchar DB Evaluation of cervical cytology - systematic
review HTA Report Agency for Health Care Research and Quality (AHRQ)
Report No 5 1999
46 Tengs T Adams M Pliskin J et al Five-hundred life-saving interventions
and their cost-effectiveness Risk Anal 199515369ndash90
47 Siebert U When should decision-analytic modeling be used in the
economic evaluation of health care [Editorial] Eur J Health Econ
20034143ndash50
48 Shamir R Hernell O Leshno M Cost-effectiveness analysis of
screening for celiac disease in adult population Med Decis Making
200626282ndash93
49 Hayashino Y Shimbo T Tsujii S et al Cost-effectiveness of coronary artery
disease screening in asymptomatic patients with type 2 diabetes and other
atherogenic risk factors in Japan factors influencing on international
application of evidence-based guidelines Int J Cardiol 200711888ndash96
50 Wong JB Koff RS Watchful waiting with periodic liver biopsy versus
immediate empirical therapy for histologically mild chronic hepatitis C A
cost-effectiveness analysis Ann Intern Med 2000133665ndash75
51 Alberti A Morsica G Chemello L et al Hepatitis C viremia and liver
disease in symptom-free individuals with anti-HCV Lancet
1992340697ndash8
52 Alter H Conry-Cantilena C Melpolder J et al Hepatitis C in asymptomatic
blood donors Hepatology 199726(3 Suppl 1)29Sndash33S
53 Marcellin P Levy S Erlinger S Therapy of hepatitis C patients with normal
aminotransferase levels Hepatology 199726(3 Suppl 1)133Sndash6S
54 Mathurin P Moussalli J Cadranel J et al Slow progression rate of fibrosis in
hepatitis C virus patients with persistently normal alanine transaminase
activity Hepatology 199827868ndash72
55 Graham CS Baden LR Yu E et al Influence of human immunodeficiency
virus infection on the course of hepatitis C virus infection a meta-analysis
Clin Infect Dis 200133562ndash9
56 Soto B Sanchez-Quijano A Rodrigo L et al Human immunodeficiency
virus infection modifies the natural history of chronic parenterally-acquired
hepatitis C with an unusually rapid progression to cirrhosis J Hepatol
1997261ndash5
Received 14 September 2008 accepted 22 December 2008
Cost-effectiveness of HCV-screening 253
Table
1Lo
ng-term
effectiveness
ofscreeningforhepatitisCundisco
untedlife
years
andorQALY
StudyCountry
Population
HCV
prevalence
()
ScreeningTreatm
ent
Incremental
life
years
(LYG)
Incremental
quality-adjusted
life
years
(QALY
)
Castelnuovo
etal36
Form
erIDUsmeanage37ye
ars
49
Systematicscreeningvsnosystematicscreening(spontaneous
0058
0071
(ThompsonCoonetal37)
Generalpracticemeanage37ye
ars
125
presentationto
screeningpossible)HCV-positive
sreceive
0010
0017
NHSRampD
HTA
Programme
UK
Form
erandcu
rrentIDUsin
generalpracticemean
age37ye
ars
49
treatm
entPegIFN+RBV
0036
0071
Allpatients
assessedforHBVva
ccinationattending
drugandalcoholservicesmeanage37ye
ars
68
0066
0072
Prisoners
atreceptionmeanage37ye
ars
(general
counseling)
16
0013
0022
Prisoners
atreceptionmeanage37ye
ars
(counseling
withIDU
focu
s)
42
0036
0058
JusotandColin30
France
Bloodrecipientslt40ye
ars
3ScreeningwithEIA3aftertransfusiontreatm
entforHCV-positive
s
withKnodellscore
5IFN
vsnoscreening+nomedicaltherapy
00085
na
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3ScreeningwithEIA3aftertransfusiontreatm
entforHCV-positive
s
withKnodellscore
5IFN
vsnoscreening+nomedicaltherapy
00004
na
Bloodrecipients
receivinghigh-volumetransfusions
3ScreeningwithEIA3before
andaftertransfusion(treatm
entsame
asabove
)
00030ndash0
0047a
na
Lealetal29
UK
IDUsin
contact
withdrugservicesmeanagena
60
ScreeningvsnoscreeningHCV-positive
swithmoderate
toseve
re
CHCreceivetreatm
entIFN
na
0015b
Plunkett
etal35
USA
Pregnantwomenmeanage30ye
ars
1Screeningvsnoscreening70
(screened)or20
(unscreened)of
HCV-positive
swithmoderate
CHCreceivetreatm
ent
PegIFN+RBV
na
000011
1Screeningandtreatm
entasabove
plusCaesariandelive
ryna
00001
Stein
etal20
(Stein
etal20033334)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
Screeningvsnoscreening50
ofHCV-positive
swithmoderate
CHCreceivetreatm
entIFN+RBV
na
001003b
NHSRampD
HTA
Programme
UK
Genito-urinary
medicineclinic
attendeesmeanage36ye
ars
15
Screeningvsnoscreening50
ofHCV-positive
swithmoderate
CHCreceivetreatm
entIFN+RBV
na
000047b
aRangereportedin
theoriginalstudyforthefirstseco
ndandthirdye
ar
bCalculatedwithdata
intheoriginalpublication
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 247
Castelnuovo et al36 performed a decision-analytic cost-effectiveness study to evaluate screening (named lsquocase-findingrsquo)in patients attending general medical practice or special drugand alcohol services and in prisoners at reception with a focuson former IDUs Based on their analyses the authorsconcluded that screening in these target populations is likelyto be cost-effective despite some uncertainty around theacceptance of testing and treatment
Cost-effectiveness studies
Seven cost-effectiveness studies evaluating HCV screeningin different population settings were included in our review(table 2) Three studies were conducted in the UK202936 twoin France3032 and two in the USA3135
Studies varied in terms of target population study pers-pective time horizon discount rate and compared strategiesincluding screening and antiviral treatment modeFive studies2030ndash3235 evaluated populations at average risk
for Hepatitis C (HCV prevalence 1ndash38) Of those one studyevaluated HCV screening in asymptomatic average-risk adultsin the USA31 one study examined screening in the generalFrench population32 and another study analysed screening inpregnant women in the USA35 two studies consideredscreening in blood recipients3032 and one in generalGenito-urinary medicine clinic attendees20
Four studies20293236 evaluated the cost-effectiveness ofscreening in different populations at higher risk for HCV(HCV prevalence 7ndash80) Four studies evaluated HCVscreening in populations with a history of IDU in differentsettings20293236 two studies analysed the cost-effectiveness ofgeneral screening in attendees of special medical services2036
and one study evaluated HCV screening in prisoners atreception36
Most studies compared systematic screening (and antiviraltreatment for detected HCV-positives) to non-systematicscreening allowing for the possibility of spontaneouscase detection with subsequent antiviral treatment20313536
The percentage of HCV positives eligible for treatment variedSome studies compared screening and antiviral treatmentfor detected HCV positives to no screening and notreatment293032 The antiviral treatment regimens(interferoninterferon plus ribavirinpeginterferon plusribavirin) and algorithms (eg treat all HCV-positives oronly those with severe liver histology) varied Only threestudies203536 evaluated screening followed by peginterferonplus ribavirin the current recommended standard antiviraltherapy38ndash40
The incremental cost-effectiveness ratios (ICER) of HCVscreening vs no screening varied over a wide range (18 300ndash1 151 000EQALY if not dominated) depending on targetpopulation study perspective time horizon discount rate andcompared strategies including screening mode and antiviraltreatment strategies In summary HCV screening in popula-tions with an average HCV prevalence and in pregnant womenwas dominated by no screening Screening in blood recipientsyielded an ICER over 140 600ELYG and was considerednot to be cost-effective30 However this study had a timehorizon of 30 years instead of lifetime and used interferonmonotherapy as antiviral treatment option In contrast HCVscreening in populations with a high HCV prevalencesuch as current or former intravenous drug users was con-sidered cost-effective HCV screening in current andorformer intravenous drug users yielded discounted incre-mental cost-effectiveness ratios below 46 700EQALY2036
General HCV screening amongst members of specialmedical practices (140 500EQALY)20 or in prisoners atreception (30 200EQALY)36 were associated with higher
cost-effectiveness ratios compared to more targeted screening(eg screening only IDUs in these settings)Figure 1 shows the incremental ICER and ICUR ratios of
screening for different HCV prevalence and different antiviraltreatment strategies Most studies evaluated the ICERsICURsin populations with HCV prevalence above 10 Only fourstudies reported results for populations with a lower HCVprevalence Many studies evaluated screening followed byantiviral treatment with interferon or interferon plus ribavirinwhich are not current standard treatment options anymorePeginterferon plus ribavirin the recommended standardantiviral treatment yields more LYsQALYs gained and resultsin much lower ICERsICURs Therefore figure 1c and d showsICERsICURs for screening followed by treatment withpeginterferon plus ribavirin only The majority of thesestudies reported ICURs below 40 000EQALY gained (ICER50 000ELYG) in populations with HCV prevalence above10 and higher ICURs (77 000ndash1 150 000EQALY gained) inlow HCV prevalence populations (results from two studies)
Discussion
We performed a systematic review on the long-term effective-ness and cost-effectiveness of screening for HCV infectionDepending on HCV prevalence and risk selection mode
the incremental long-term effectiveness of HCV screening andearly treatment compared to no screening and standard carevaried from 00004 LYG (015 life-days gained) to 0066 LYG(24 life-days gained) and from 00001 QALY (004 quality-adjusted life-days gained) to 0072 QALY (26 quality-adjustedlife-days gained) To put these figures into perspective theycan be compared with other screening programs For examplebiennial cervical cancer screening compared to no screening isassociated with a gain of 92 life days Moving from a 2-year toa 1-year interval is associated with a gain of four life days41
Given 1 undetected HIV-prevalence one-time HIVscreening in US health care settings was reported to increaselife-expectancy by 39 days (29 quality-adjusted life days)Screening every 5 years would gain additional 097 days(070 quality-adjusted life days)42
It must be noted that these numbers reflect the averageincremental life expectancy per person screened This trans-lates to many persons with no gain and some persons withseveral years or decades gain in life expectancyThe incremental cost-effectiveness ratios varied over a wide
range depending on target population (eg HCV prevalenceage etc) study perspective time horizon discount rate andcompared strategies including screening settings and antiviraltreatment strategies Therefore the comparability of theresults is limitedHCV screening vs no screening resulted in ICURs ranging
from 18 300 to 1 151 000EQALY if screening was notdominated In the reviewed studies HCV screening wasconsidered cost-effective (ICURs below 40 000EQALY fortreatment with peginterferon plus ribavirin) in populationswith an elevated HCV prevalence such as intravenous drugusers General HCV screening in average-risk adults wasunlikely to be effective and cost-effectiveHowever cost-effectiveness should not be the main criterion
for the decision to implement HCV screening Given thesubstantial number of prevalent iatrogenic HCV-infected casesother ethical concepts such as fairness and equity may beconsidered as wellCost-effectiveness is depending on the willingness-to-pay in
a certain society which depends on several economical socialand political factors There is currently no general agreementacross countries about the cost-effectiveness threshold To givea measurement on the incremental cost-effectiveness ratios of
248 European Journal of Public Health
Table
2Disco
untedincrementalco
st-effectiveness-ratios(ICER)anddisco
untedincrementalco
st-utility-ratios(ICUR)forscreeningforhepatitisC
StudyCountry
CurrencyYear
Perspective
Disco
unt
rate
()
Comparator
TargetPopulation
ICER
(ELYG)
ICUR
(EQ
ALY
)
Castelnuovo
etal36
(ThompsonCoon
UKpound2004
NationalHealth
6(costs)15
(effects)
Systematicscreeningvsnosystematicscreening
(spontaneouspresentationto
screeningpossible)
Form
erIDUsgeneralcasemeanage37ye
ars49
HCV
preva
lence
30232
24858
etal37)
Services(N
HS)
HCV-positive
sreceivetreatm
entPegIFN+RBV
Generalpracticemeanage37ye
ars125
HCVpreva
lence
38633
23321
NHSRampD
HTA
Programme
Form
erandcu
rrentIDUsin
generalpracticemeanage
37ye
ars49
HCV
preva
lence
30194
24827
UK
Allpatients
assessedforHBVva
ccinationattendingdrugand
alcoholservicesmeanage37ye
ars68
HCV
preva
lence
28689
26365
(Screeningincludedgenerallecture
onHCV)
Prisoners
atreceptionmeanage37ye
ars16
HCVpreva
lence
50833
30231
(Screeningincludedlecture
withfocu
sonIDU
andrisk
ofHCV)
Prisoners
atreceptionmeanage37ye
ars42
HCVpreva
lence
40301
24813
JusotandColin30
France
FF1996Health
care
system
30ye
ars
time
Nodisco
unt
rate
ScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipientslt40ye
ars3
HCV
preva
lence
140674
mdash
horizo
nScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3
HCV
preva
lence
477654
mdash
ScreeningwithEIA3before
andaftertransfusion
(treatm
entsameasabove
)
Bloodrecipients
receivinghigh-volumetransfusions
3
HCV
preva
lence
144970
mdash
Lealetal29
UKpound1997na
6ScreeningvsnoscreeningHCV-positive
swithmoderate
IDUsin
contact
withdrugservices60
HCV
preva
lence
mdash119754
UK
toseve
reCHCreceivetreatm
entIFN
(IFN
+RBV)
(18267-34537a)
Loubiere
etal32
France
E1998Health
care
system
3ScreeningwithEIA3+EIA3vsnoscreening+notreatm
ent
50
ofCHCcasesand40
ofcirrhosiscasesreceive
treatm
entIFN+RBV
IDUs80
HCV
preva
lence
3881
mdash
ScreeningwithEIA3+PCRvsnoscreening+notreatm
ent
treatm
entasabove
9742
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
Patients
transfusedbefore
19917
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
243737
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
GeneralFrench
population12
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
5005
mdash
Plunkett
etal35
USA
US$
2003Health
care
system
3ScreeningvsnoscreeningHCV-positive
sreceivetreatm
ent
PegIFN+RBV
Pregnantwomen1
HCV
preva
lence
mdashNoscreening
dominant
Asabove
plusCaesariandelive
rymdash
1150976
Singeretal31
USA
US$
2001S
ocietal
3Screeningvsnoscreening20
ofHCV-positive
sreceive
treatm
entIFN+RBV
Asymptomatic
ave
ragerisk
adultsmeanage35ye
ars
38
HCV
preva
lence
mdashNoscreening
dominant
Stein
etal20
(Stein
etal3334)
UKpound2001
NationalHealth
6(costs)15
(effects)
Screeningvsnoscreening50
ofHCV-positive
swith
moderate
CHCreceivetreatm
entIFN+RBV(PegIFN+RBV)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
HCV
preva
lence
mdash46707(23598)
NHSRampD
HTA
Programme
Services(N
HS)
Allscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV(PegIFN+RBV)
Genito-urinary
medicineclinic
attendeesmeanage
36ye
ars15
HCVpreva
lence
mdash140471(77052)
UK
IDUsscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV
32
HCVpreva
lence
mdash45076
aDependingontreatm
entduration(24or48weeks)
andribavirindosage(1000or1200mgd)
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 249
well-accepted screening programs cytological screening forcervical cancer every 3 years compared to no screening costspound1800 per life year gained in the UK43 1400ELYG inGermany44 and 8400 US$LYG in the USA45 Screening blooddonors for HIV costs 14 000 US$LYG46 Given 1 undetectedHIV-prevalence one-time HIV screening in US health caresettings would result in 41 700 US$QALY screening every 5years 123 600 US$QALY42
In the absence of long-term clinical trials all results wereretrieved from decision-analytic studies which link diagnosticand clinical short-term outcomes (eg test sensitivity andspecificity or viral response) to clinical long-term outcomes(eg mortality and long-term quality of life)47 The includedstudies were heterogeneous in regard to health economicanalysis techniques (eg time horizons discounting etc)HCV population prevalence acquisition risk factors andantiviral therapy Therefore the outcomes in terms of lifeyears gained quality adjusted life years and incremental costeffectiveness ratios varied over a wide range However severalresults were logical and predictable for example screening ismore cost effective in higher prevalence or higher riskpopulationsmdasha result that has been reported for other diseasestoo4849
Like all decision-analytic models screening models mustsimplify the real world for more transparency and thepossibility to analyse specific research questions47 However
some methodological and structural model assumptions mayhave an important impact on clinical and economic outcomesand could lead to bias in favour for or against HCV screeningThus it is important to discuss some aspects essential fora valuable screening modelFirst it is important to allow for the possibility of
spontaneous case detection by symptoms with subsequentantiviral treatment in the non-screening strategy of any HCV-screening model Without these estimates the benefits of thescreening strategy are overestimated and outcomes are biasedin favour of the HCV-screening strategy Second the settingof antiviral treatment in both strategies is very important Notreatment in the non-screening strategy or lsquowait and treatcirrhosisrsquo vs lsquoscreen and treat all HCV-positive patientsrsquomay overestimate both the incremental benefits and costs ofscreening Therefore antiviral treatment should be consideredfor chronic HCV-patients (detected through screeningsymptoms or spontaneous presentation) in both strategiesaccording to recent treatment guidelines Third moststudies considered antiviral therapy with interferon plusribavirin20293132 and two studies used even interferonmonotherapy293032 Only three studies considered peginter-feron plus ribavirin203536 Having better treatment optionsand administering antiviral treatment according to genotype-specific guidelines with early treatment stop for patients notresponding would allow tailoring treatment efficiently which
Figure 1 Incremental cost-effectiveness ratio of screening compared to no screening in Euro per life year gained (EuroLYG) orquality-adjusted life-year gained (EuroQALY) for different HCV prevalence in the target population (a) ICER (in EuroLYG) ofHCV screening and different antiviral treatment (b) ICUR (in EuroQALY) of HCV screening and different antiviral treatment (c)ICER (in EuroLYG) of HCV screening and antiviral treatment with peginterferon plus ribavirin (d) ICUR (in EuroQALY) of HCVscreening and antiviral treatment with peginterferon plus ribavirin (Each point represents the ICERICUR of a specific targetpopulation and screeningtreatment strategy Multiple points may come from the same modelling study) IFN= interferonRBV= ribavirin PegIFN=peginterferon One point out of range of figure 1(d) 1 150 976QALY with 1 HCV prevalencePegIFN+RBV
250 European Journal of Public Health
would reduce adverse effects harms and antiviral treatmentcosts and improve the cost-effectiveness of HCV screening dueto better clinical and economic outcomes Fourth eligibilityof patients for and adherence to antiviral treatment shouldbe considered In particular any HCV-screening modelshould consider a lsquowait and seersquo strategy in the screeningarm because not all patients necessarily should or want to betreated immediately after HCV detection50 HCV screeningand watchful monitoring HCV-infected patients may be moreeffective and cost-effective than screening with immediatetreatment of all HCV-infected patients since a fraction ofHCV-infected patients may not develop fibrosis or cirrhosisduring their lifetime This is particularly important for theelderlyThe age at which HCV-infected patients are identified and
treated is a very important modelling factor as well Moststudies used an average age of 40 years for the evaluatedpopulation which may be adequate for patients with CHCwhich already developed symptoms However HCV screeningmay detect HCV-infected individuals earlier at significantlyyounger age In addition certain HCV-infected populationsat risk for advanced liver disease such as intravenous druguser or ethnic minority groups who have acquired HCViatrogenically in early childhood have a significantly youngeraverage age Thus in these cases benefits from early detectionand treatment may be underestimatedDiscounting costs and effects is important and affects ICERs
since the clinical and economic benefits of screening due toavoided cirrhosis and its sequelae occur in the distant futurewhereas the costs of screening and antiviral treatment occurmuch earlier One study30 in France did not discount at all andtwo studies 2036 conducted in the UK used different discountrates for costs and effects The ICERs increased significantly insensitivity analyses when cost and effects were equallydiscounted with 35 annually (eg from 16 514 poundQALY to33 235 poundQALY36)Most studies used a lifelong time horizon for their analyses
which is the most adequate timeframe to use As benefits thatoccur far in the future will not be considered within shortertime horizons estimated cost-effectiveness ratios may be toohigh One study used a 30 year time horizon30 As cirrhosisand its complications develop slowly within 10ndash30 years eventhis time horizon may be too short and benefits may beunderestimatedAll studies included in this review take into account the
natural history of chronic Hepatitis C disease progression andmortality from CHC-related complications Only one studyused the natural history of chronic Hepatitis B diseaseprogression as at that time no information existed regardingHepatitis C progression However it was not always clearwhether slower progression rates were considered for screenedpopulations tending to present histological milder Hepatitis Ccompared to non-screened populations mostly detected bysymptoms Several studies reported that patients with mildCHC and normal ALT levels may have a reduced risk ofprogression to cirrhosis compared to patients with more severehistology or elevated ALT levels751ndash54 Furthermore analysesfor CHC patients co-infected with HIV should assume higherprogression rates to CHC-related liver diseases than analysesin non-co-infected CHC patients5556In addition most studies used age- and gender-specific
mortality rates of the general population for the backgroundmortality for CHC patients However background mortality isoften higher due to co-morbidity from other diseases such asHIV- or HBV-coinfection or in case of IDUs from continua-tion of or relapse to drug abuse Even patients with moderateCHC or cirrhosis that respond to antiviral treatment continue
to have an increased risk of developing hepatocellularcarcinoma which is associated with significant mortalityOverall this review discovered many study limitations and
the need for further systematic research in HCV screeningParticularly health-economic studies in population with lowor average HCV prevalence evaluating HCV screeningcombined with different strategies of monitoring and antiviraltreatment of HCV-positives according to current treatmentstandard are requiredFinally it must be mentioned that due to different
epidemiology health care systems disease managementpractice patterns and treatment costs in different Europeancountries results cannot be generalized and are difficult if notimpossible to be directly transferred from one country toanother Further research should focus on the development ofa Pan-European Hepatitis C screening model that fulfils thequality criteria discussed above and which can be adapted tothe context of the different health care systems and countrieswithin Europe
Conclusion
Although HCV screening fulfils general population screeningcriteria specific well-formulated national programs forHepatitis C screening are lacking in most European countriesBased on current evidence HCV screening and early treatmenthas the potential to improve average life-expectancy butshould focus on populations with elevated HCV prevalence tobe cost-effective Further research is needed to investigate thelong-term health-economic impact of HCV screening whencombined with appropriate monitoring and treatmentstrategies in different European health care systems Furtherassessments should focus on determining optimal targetgroups and settings that yield effective and cost-effectiveHCV screening strategies
Acknowledgements
We thank the members of the PanEuropean Hepatitis C ExpertPanel for providing local information and reviewing the resultsof our study Maria Buti MD Hospital General UniversitarioVall de Hebron Barcelona Spain Florin Caruntu Matei BalsInfectious Disease Institute Bucharest and Carol DavilaMedicine and Pharmacy University Bucharest RomaniaCharles Gore The Hepatitis C Trust London UK Scott DHolmberg MD MPH Epidemiology and Surveillance BranchDivision of Viral Hepatitis Prevention NCHHSTP Centers forDisease Control and Prevention Atlanta GA USA NadinePiorkowsky The European Liver Patients Association (ELPA)Germany Prof William Rosenberg Institute of HepatologyUniversity College London UK However the authors aloneare responsible for the results reported and views expressed inthe paper The authors had complete and independent controlover study design analysis and interpretation of data reportwriting and publication regardless of results
Funding
This project was supported in part by an unrestrictededucational grant from Hoffmann La-Roche Ltd BaselSwitzerland
Conflicts of interest NM has received travel support fromHoffmann La-Roche Ltd to present preliminary results of thestudy to different audiences US has received healthtechnology assessment research grants from the GermanFederal Ministry of Health and the Austrian Academy of
Cost-effectiveness of HCV-screening 251
Sciences and unrestricted research grants from ScheringPlough and Roche
Key points
Although HCV screening fulfils general populationscreening criteria specific well-formulated nationalpublic health programs for hepatitis C screening arelacking in most European countries
According to this review HCV screening with earlytreatment has the potential to improve averagelife-expectancy but should focus on populationswith elevated HCV prevalence to be cost-effectiveAppropriate target groups could be selected based onrisk factor profiles
Appropriate monitoring and treatment strategiesfor detected early disease may improve the cost-effectiveness of HCV screening
In view of the multitude of iatrogenic infectionshowever cost-effectiveness may not be the onlydecision criterion for the implementation of HCVscreening Aspects like fairness might be considered aswell
Further research should focus on the public-healthimpact of HCV screening when combined withappropriate monitoring and treatment strategies andon determining optimal target groups and settings
References
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among injecting drug users in the European Union In Jager J Limburg W
Kretzschmar M et al editors Hepatitis C and injecting drug use
Luxembourg European Monitoring Centre for Drugs and Drug Addiction
2006 91ndash135
2 European Centre for Disease Prevention and Control (ECDC) Annual
epidemiologic report on communicable diseases in Europe 2007 http
wwwecdceuropaeu (date last accessed 28 June 2007)
3 Rantala M van de Laar MJ Surveillance and epidemiology of hepatitis B and
C in Europe ndash a review Euro Surveill 200813 Available online
httpwwweurosurveillanceorg (date last accessed 13 December 2008)
4 Alter H Seeff L Recovery persistence and sequelae in hepatitis C virus
infection a perspective on long-term outcome Semin Liver Dis
20002017ndash35
5 Anonymous EASL international consensus conference on hepatitis C
Paris 26ndash27 February 1999 Consensus statement J Hepatol
199931(Suppl 1)3ndash8
6 Dore GJ Freeman AJ Law M Kaldor JM Is severe liver disease a common
outcome for people with chronic hepatitis C J Gastroenterol Hepatol
200217423ndash30
7 Freeman A Dore G Law M et al Estimating progression to cirrhosis in
chronic hepatitis C virus infection Hepatology 200134809ndash16
8 Freeman AJ Law MG Kaldor JM Dore GJ Predicting progression
to cirrhosis in chronic hepatitis C virus infection J Viral Hepat
200310285ndash93
9 Hopf U Moller B Kuther D et al Long-term follow-up of posttransfusion
and sporadic chronic hepatitis non-A non-B and frequency of circulating
antibodies to hepatitis C virus (HCV) J Hepatol 19901069ndash76
10 Koretz R Abbey H Coleman E Gitnick G Non-A non-B post-transfusion
hepatitis Looking back in the second decade Ann Intern Med
1993119110ndash5
11 Mattsson L Outcome of acute symptomatic non-A non-B hepatitis
a 13-year follow-up study of hepatitis C virus markers Liver
199313274ndash8
12 Tremolada F Casarin C Alberti A et al Long-term follow-up of non-A
non-B (type C) post-transfusion hepatitis J Hepatol 199216273ndash81
13 World Health Organization (WHO) Global surveillance and control of
hepatitis C Report of a WHO consultation organized in collaboration with
the Viral Hepatitis Prevention Board Antwerp Belgium J Viral Hepatitis
1999635ndash47
14 Wilson J Jungner Y Principles and practice of mass screening for disease
Bol Oficina Sanit Panam 196865281ndash393
15 Wilson J The evaluation of the worth of early disease detection J R Coll Gen
Pract 196816(Suppl 2)48ndash57
16 Brady B Siebert U Sroczynski G et al Pegylated interferon combined with
ribavirin for chronic hepatitis C virus infection an economic evaluation
[Technology Report No 82] Ottawa Canadian Agency for Drugs and
Technologies in Health 2007
17 Wright M Grieve R Roberts J Main J Thomas HC on behalf of the UK
Mild Hepatitis C Trial Investigators Health benefits of antiviral therapy for
mild chronic hepatitis C randomised controlled trial and economic
evaluation Health Technol Assess 2006101ndash132
18 Maheshwari A Ray S Thuluvath PJ Acute hepatitis C Lancet
2008372321ndash32
19 Jullien-Depradeux AM Bloch J Le Quellec-Nathan M Abenhaim A
National campaign against hepatitis C in France (1999ndash2002) Acta
Gastroenterol Belg 200265112ndash4
20 Stein K Dalziel K Walker A et al Screening for hepatitis C among injecting
drug users and in genitourinary medicine clinics systematic reviews of
effectiveness modelling study and national survey of current practice
Health Technol Assess 200261ndash122
21 Department of HealthGeneral Health Protection Hepatitis C Action Plan
for England July 2004 Available at wwwdhgovukpublications (date last
accessed 12 November 2006
22 European Liver Patient Association (ELPA) European Parliament demands
EU-wide action on Hepatitis C 2007 httpwwwelpaorg (date last accessed
15 May 2007)
23 European Liver Patient Association (ELPA) Promoting Hepatitis C Screening
in Europe 2007 httpwwwelpaorg (date last accessed 8 May 2008)
24 Shepherd J Brodin HFT Cave CB et al Clinical- and cost-effectiveness of
pegylated interferon alfa in the treatment of chronic hepatitis C a systematic
review and economic evaluation Int J Technol Assess Health Care
20052147ndash54
25 Siebert U Sroczynski G on behalf of the German Hepatitis C Model
(GEHMO) Group and the HTA Expert Panel on Hepatitis C Antiviral
therapy for patients with chronic hepatitis C in Germany Evaluation of
effectiveness and cost-effectiveness of initial combination therapy with
InterferonPeginterferon plus Ribavirin Series of the German Institute for
Medical Documentation and Information commissioned by the Federal
Ministry of Health and Social Security Cologne DIMDI 2003
26 Organisation for Economic Co-operation and Development (OECD) Gross
domestic product purchasing power parities 2006 httpwwwoecdorg
27 German Federal Statistical Office German Consumer Price Index (CPI) 2006
httpwwwdestatisde
28 Population Division of the Department of Economic and Social Affairs of the
United Nations Secretariat World population prospects the 2006 revision and
world urbanization prospects the 2005 revision httpesaunorgunpp
29 Leal P Stein K Rosenberg W What is the cost utility of screening for
hepatitis C virus (HCV) in intravenous drug users J Med Screen
19996124ndash31
30 Jusot JF Colin C Cost-effectiveness analysis of strategies for hepatitis C
screening in French blood recipients Eur J Public Health 200111373ndash9
31 Singer ME Younossi ZM Cost effectiveness of screening for hepatitis C virus
in asymptomatic average-risk adults Am J Med 2001111614ndash21
32 Loubiere S Rotily M Moatti JP Prevention could be less cost-effective than
cure the case of hepatitis C screening policies in France Int J Technol Assess
Health Care 200319632ndash45
33 Stein K Dalziel K Walker A et al Screening for hepatitis C in genito-urinary
medicine clinics a cost utility analysis J Hepatol 200339814ndash25
34 Stein K Dalziel K Walker A et al Screening for Hepatitis C in injecting drug
users a cost utility analysis J Public Health 20042661ndash71
252 European Journal of Public Health
35 Plunkett BA Grobman WA Routine hepatitis C virus screening in
pregnancy a cost-effectiveness analysis Am J Obstet Gynecol
20051921153ndash61
36 Castelnuovo E Thompson-Coon J Pitt M et al The cost-effectiveness of
testing for hepatitis C in former injecting drug users Health Technol Assess
200610 iiindashiv ixndashxii 1ndash93
37 Thompson Coon J Castelnuovo E Pitt M et al Case finding for hepatitis C
in primary care a cost utility analysis Fam Pract 200623393ndash406
38 Sherman M Shafran S Burak K et al Management of chronic hepatitis C
consensus guidelines Can J Gastroenterol 200721(Suppl C)25Cndash34C
39 NIH Consensus Statement National institutes of health consensus devel-
opment conference management of Hepatitis C 2002 - June 10ndash12 2002
Hepatology 200236(5 Suppl 1)S3ndash20
40 Zeuzem S Standard treatment of acute and chronic hepatitis C
Z Gastroenterol 200442714ndash9
41 Siebert U Sroczynski G Hillemanns P et al The German cervical cancer
screening model development and validation of a decision-analytic model
for cervical cancer screening in Germany Eur J Public Health
200616185ndash92
42 Sanders G Bayoumi A Sundaram V et al Cost-effectiveness of screening for
HIV in the era of highly active antiretroviral therapy N Engl J Med
2005352570ndash85
43 Payne N Chilcott J McGoogan E Liquid-based cytology in cervical
screening a rapid and systematic review Health Technol Assess 200041ndash73
44 Siebert U Muth C Sroczynski G et al Liquid-based preparation and
computer-assisted examination of cervical smears in cervical cancer screening
Clinical effectiveness economic evaluation and systematic decision analysis
Series of the German Institute for Medical Documentation and Information
commissioned by the Federal Ministry of Health and Social Security St
Augustin Asgard 2004
45 McCrory DC Matchar DB Evaluation of cervical cytology - systematic
review HTA Report Agency for Health Care Research and Quality (AHRQ)
Report No 5 1999
46 Tengs T Adams M Pliskin J et al Five-hundred life-saving interventions
and their cost-effectiveness Risk Anal 199515369ndash90
47 Siebert U When should decision-analytic modeling be used in the
economic evaluation of health care [Editorial] Eur J Health Econ
20034143ndash50
48 Shamir R Hernell O Leshno M Cost-effectiveness analysis of
screening for celiac disease in adult population Med Decis Making
200626282ndash93
49 Hayashino Y Shimbo T Tsujii S et al Cost-effectiveness of coronary artery
disease screening in asymptomatic patients with type 2 diabetes and other
atherogenic risk factors in Japan factors influencing on international
application of evidence-based guidelines Int J Cardiol 200711888ndash96
50 Wong JB Koff RS Watchful waiting with periodic liver biopsy versus
immediate empirical therapy for histologically mild chronic hepatitis C A
cost-effectiveness analysis Ann Intern Med 2000133665ndash75
51 Alberti A Morsica G Chemello L et al Hepatitis C viremia and liver
disease in symptom-free individuals with anti-HCV Lancet
1992340697ndash8
52 Alter H Conry-Cantilena C Melpolder J et al Hepatitis C in asymptomatic
blood donors Hepatology 199726(3 Suppl 1)29Sndash33S
53 Marcellin P Levy S Erlinger S Therapy of hepatitis C patients with normal
aminotransferase levels Hepatology 199726(3 Suppl 1)133Sndash6S
54 Mathurin P Moussalli J Cadranel J et al Slow progression rate of fibrosis in
hepatitis C virus patients with persistently normal alanine transaminase
activity Hepatology 199827868ndash72
55 Graham CS Baden LR Yu E et al Influence of human immunodeficiency
virus infection on the course of hepatitis C virus infection a meta-analysis
Clin Infect Dis 200133562ndash9
56 Soto B Sanchez-Quijano A Rodrigo L et al Human immunodeficiency
virus infection modifies the natural history of chronic parenterally-acquired
hepatitis C with an unusually rapid progression to cirrhosis J Hepatol
1997261ndash5
Received 14 September 2008 accepted 22 December 2008
Cost-effectiveness of HCV-screening 253
Castelnuovo et al36 performed a decision-analytic cost-effectiveness study to evaluate screening (named lsquocase-findingrsquo)in patients attending general medical practice or special drugand alcohol services and in prisoners at reception with a focuson former IDUs Based on their analyses the authorsconcluded that screening in these target populations is likelyto be cost-effective despite some uncertainty around theacceptance of testing and treatment
Cost-effectiveness studies
Seven cost-effectiveness studies evaluating HCV screeningin different population settings were included in our review(table 2) Three studies were conducted in the UK202936 twoin France3032 and two in the USA3135
Studies varied in terms of target population study pers-pective time horizon discount rate and compared strategiesincluding screening and antiviral treatment modeFive studies2030ndash3235 evaluated populations at average risk
for Hepatitis C (HCV prevalence 1ndash38) Of those one studyevaluated HCV screening in asymptomatic average-risk adultsin the USA31 one study examined screening in the generalFrench population32 and another study analysed screening inpregnant women in the USA35 two studies consideredscreening in blood recipients3032 and one in generalGenito-urinary medicine clinic attendees20
Four studies20293236 evaluated the cost-effectiveness ofscreening in different populations at higher risk for HCV(HCV prevalence 7ndash80) Four studies evaluated HCVscreening in populations with a history of IDU in differentsettings20293236 two studies analysed the cost-effectiveness ofgeneral screening in attendees of special medical services2036
and one study evaluated HCV screening in prisoners atreception36
Most studies compared systematic screening (and antiviraltreatment for detected HCV-positives) to non-systematicscreening allowing for the possibility of spontaneouscase detection with subsequent antiviral treatment20313536
The percentage of HCV positives eligible for treatment variedSome studies compared screening and antiviral treatmentfor detected HCV positives to no screening and notreatment293032 The antiviral treatment regimens(interferoninterferon plus ribavirinpeginterferon plusribavirin) and algorithms (eg treat all HCV-positives oronly those with severe liver histology) varied Only threestudies203536 evaluated screening followed by peginterferonplus ribavirin the current recommended standard antiviraltherapy38ndash40
The incremental cost-effectiveness ratios (ICER) of HCVscreening vs no screening varied over a wide range (18 300ndash1 151 000EQALY if not dominated) depending on targetpopulation study perspective time horizon discount rate andcompared strategies including screening mode and antiviraltreatment strategies In summary HCV screening in popula-tions with an average HCV prevalence and in pregnant womenwas dominated by no screening Screening in blood recipientsyielded an ICER over 140 600ELYG and was considerednot to be cost-effective30 However this study had a timehorizon of 30 years instead of lifetime and used interferonmonotherapy as antiviral treatment option In contrast HCVscreening in populations with a high HCV prevalencesuch as current or former intravenous drug users was con-sidered cost-effective HCV screening in current andorformer intravenous drug users yielded discounted incre-mental cost-effectiveness ratios below 46 700EQALY2036
General HCV screening amongst members of specialmedical practices (140 500EQALY)20 or in prisoners atreception (30 200EQALY)36 were associated with higher
cost-effectiveness ratios compared to more targeted screening(eg screening only IDUs in these settings)Figure 1 shows the incremental ICER and ICUR ratios of
screening for different HCV prevalence and different antiviraltreatment strategies Most studies evaluated the ICERsICURsin populations with HCV prevalence above 10 Only fourstudies reported results for populations with a lower HCVprevalence Many studies evaluated screening followed byantiviral treatment with interferon or interferon plus ribavirinwhich are not current standard treatment options anymorePeginterferon plus ribavirin the recommended standardantiviral treatment yields more LYsQALYs gained and resultsin much lower ICERsICURs Therefore figure 1c and d showsICERsICURs for screening followed by treatment withpeginterferon plus ribavirin only The majority of thesestudies reported ICURs below 40 000EQALY gained (ICER50 000ELYG) in populations with HCV prevalence above10 and higher ICURs (77 000ndash1 150 000EQALY gained) inlow HCV prevalence populations (results from two studies)
Discussion
We performed a systematic review on the long-term effective-ness and cost-effectiveness of screening for HCV infectionDepending on HCV prevalence and risk selection mode
the incremental long-term effectiveness of HCV screening andearly treatment compared to no screening and standard carevaried from 00004 LYG (015 life-days gained) to 0066 LYG(24 life-days gained) and from 00001 QALY (004 quality-adjusted life-days gained) to 0072 QALY (26 quality-adjustedlife-days gained) To put these figures into perspective theycan be compared with other screening programs For examplebiennial cervical cancer screening compared to no screening isassociated with a gain of 92 life days Moving from a 2-year toa 1-year interval is associated with a gain of four life days41
Given 1 undetected HIV-prevalence one-time HIVscreening in US health care settings was reported to increaselife-expectancy by 39 days (29 quality-adjusted life days)Screening every 5 years would gain additional 097 days(070 quality-adjusted life days)42
It must be noted that these numbers reflect the averageincremental life expectancy per person screened This trans-lates to many persons with no gain and some persons withseveral years or decades gain in life expectancyThe incremental cost-effectiveness ratios varied over a wide
range depending on target population (eg HCV prevalenceage etc) study perspective time horizon discount rate andcompared strategies including screening settings and antiviraltreatment strategies Therefore the comparability of theresults is limitedHCV screening vs no screening resulted in ICURs ranging
from 18 300 to 1 151 000EQALY if screening was notdominated In the reviewed studies HCV screening wasconsidered cost-effective (ICURs below 40 000EQALY fortreatment with peginterferon plus ribavirin) in populationswith an elevated HCV prevalence such as intravenous drugusers General HCV screening in average-risk adults wasunlikely to be effective and cost-effectiveHowever cost-effectiveness should not be the main criterion
for the decision to implement HCV screening Given thesubstantial number of prevalent iatrogenic HCV-infected casesother ethical concepts such as fairness and equity may beconsidered as wellCost-effectiveness is depending on the willingness-to-pay in
a certain society which depends on several economical socialand political factors There is currently no general agreementacross countries about the cost-effectiveness threshold To givea measurement on the incremental cost-effectiveness ratios of
248 European Journal of Public Health
Table
2Disco
untedincrementalco
st-effectiveness-ratios(ICER)anddisco
untedincrementalco
st-utility-ratios(ICUR)forscreeningforhepatitisC
StudyCountry
CurrencyYear
Perspective
Disco
unt
rate
()
Comparator
TargetPopulation
ICER
(ELYG)
ICUR
(EQ
ALY
)
Castelnuovo
etal36
(ThompsonCoon
UKpound2004
NationalHealth
6(costs)15
(effects)
Systematicscreeningvsnosystematicscreening
(spontaneouspresentationto
screeningpossible)
Form
erIDUsgeneralcasemeanage37ye
ars49
HCV
preva
lence
30232
24858
etal37)
Services(N
HS)
HCV-positive
sreceivetreatm
entPegIFN+RBV
Generalpracticemeanage37ye
ars125
HCVpreva
lence
38633
23321
NHSRampD
HTA
Programme
Form
erandcu
rrentIDUsin
generalpracticemeanage
37ye
ars49
HCV
preva
lence
30194
24827
UK
Allpatients
assessedforHBVva
ccinationattendingdrugand
alcoholservicesmeanage37ye
ars68
HCV
preva
lence
28689
26365
(Screeningincludedgenerallecture
onHCV)
Prisoners
atreceptionmeanage37ye
ars16
HCVpreva
lence
50833
30231
(Screeningincludedlecture
withfocu
sonIDU
andrisk
ofHCV)
Prisoners
atreceptionmeanage37ye
ars42
HCVpreva
lence
40301
24813
JusotandColin30
France
FF1996Health
care
system
30ye
ars
time
Nodisco
unt
rate
ScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipientslt40ye
ars3
HCV
preva
lence
140674
mdash
horizo
nScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3
HCV
preva
lence
477654
mdash
ScreeningwithEIA3before
andaftertransfusion
(treatm
entsameasabove
)
Bloodrecipients
receivinghigh-volumetransfusions
3
HCV
preva
lence
144970
mdash
Lealetal29
UKpound1997na
6ScreeningvsnoscreeningHCV-positive
swithmoderate
IDUsin
contact
withdrugservices60
HCV
preva
lence
mdash119754
UK
toseve
reCHCreceivetreatm
entIFN
(IFN
+RBV)
(18267-34537a)
Loubiere
etal32
France
E1998Health
care
system
3ScreeningwithEIA3+EIA3vsnoscreening+notreatm
ent
50
ofCHCcasesand40
ofcirrhosiscasesreceive
treatm
entIFN+RBV
IDUs80
HCV
preva
lence
3881
mdash
ScreeningwithEIA3+PCRvsnoscreening+notreatm
ent
treatm
entasabove
9742
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
Patients
transfusedbefore
19917
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
243737
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
GeneralFrench
population12
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
5005
mdash
Plunkett
etal35
USA
US$
2003Health
care
system
3ScreeningvsnoscreeningHCV-positive
sreceivetreatm
ent
PegIFN+RBV
Pregnantwomen1
HCV
preva
lence
mdashNoscreening
dominant
Asabove
plusCaesariandelive
rymdash
1150976
Singeretal31
USA
US$
2001S
ocietal
3Screeningvsnoscreening20
ofHCV-positive
sreceive
treatm
entIFN+RBV
Asymptomatic
ave
ragerisk
adultsmeanage35ye
ars
38
HCV
preva
lence
mdashNoscreening
dominant
Stein
etal20
(Stein
etal3334)
UKpound2001
NationalHealth
6(costs)15
(effects)
Screeningvsnoscreening50
ofHCV-positive
swith
moderate
CHCreceivetreatm
entIFN+RBV(PegIFN+RBV)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
HCV
preva
lence
mdash46707(23598)
NHSRampD
HTA
Programme
Services(N
HS)
Allscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV(PegIFN+RBV)
Genito-urinary
medicineclinic
attendeesmeanage
36ye
ars15
HCVpreva
lence
mdash140471(77052)
UK
IDUsscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV
32
HCVpreva
lence
mdash45076
aDependingontreatm
entduration(24or48weeks)
andribavirindosage(1000or1200mgd)
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 249
well-accepted screening programs cytological screening forcervical cancer every 3 years compared to no screening costspound1800 per life year gained in the UK43 1400ELYG inGermany44 and 8400 US$LYG in the USA45 Screening blooddonors for HIV costs 14 000 US$LYG46 Given 1 undetectedHIV-prevalence one-time HIV screening in US health caresettings would result in 41 700 US$QALY screening every 5years 123 600 US$QALY42
In the absence of long-term clinical trials all results wereretrieved from decision-analytic studies which link diagnosticand clinical short-term outcomes (eg test sensitivity andspecificity or viral response) to clinical long-term outcomes(eg mortality and long-term quality of life)47 The includedstudies were heterogeneous in regard to health economicanalysis techniques (eg time horizons discounting etc)HCV population prevalence acquisition risk factors andantiviral therapy Therefore the outcomes in terms of lifeyears gained quality adjusted life years and incremental costeffectiveness ratios varied over a wide range However severalresults were logical and predictable for example screening ismore cost effective in higher prevalence or higher riskpopulationsmdasha result that has been reported for other diseasestoo4849
Like all decision-analytic models screening models mustsimplify the real world for more transparency and thepossibility to analyse specific research questions47 However
some methodological and structural model assumptions mayhave an important impact on clinical and economic outcomesand could lead to bias in favour for or against HCV screeningThus it is important to discuss some aspects essential fora valuable screening modelFirst it is important to allow for the possibility of
spontaneous case detection by symptoms with subsequentantiviral treatment in the non-screening strategy of any HCV-screening model Without these estimates the benefits of thescreening strategy are overestimated and outcomes are biasedin favour of the HCV-screening strategy Second the settingof antiviral treatment in both strategies is very important Notreatment in the non-screening strategy or lsquowait and treatcirrhosisrsquo vs lsquoscreen and treat all HCV-positive patientsrsquomay overestimate both the incremental benefits and costs ofscreening Therefore antiviral treatment should be consideredfor chronic HCV-patients (detected through screeningsymptoms or spontaneous presentation) in both strategiesaccording to recent treatment guidelines Third moststudies considered antiviral therapy with interferon plusribavirin20293132 and two studies used even interferonmonotherapy293032 Only three studies considered peginter-feron plus ribavirin203536 Having better treatment optionsand administering antiviral treatment according to genotype-specific guidelines with early treatment stop for patients notresponding would allow tailoring treatment efficiently which
Figure 1 Incremental cost-effectiveness ratio of screening compared to no screening in Euro per life year gained (EuroLYG) orquality-adjusted life-year gained (EuroQALY) for different HCV prevalence in the target population (a) ICER (in EuroLYG) ofHCV screening and different antiviral treatment (b) ICUR (in EuroQALY) of HCV screening and different antiviral treatment (c)ICER (in EuroLYG) of HCV screening and antiviral treatment with peginterferon plus ribavirin (d) ICUR (in EuroQALY) of HCVscreening and antiviral treatment with peginterferon plus ribavirin (Each point represents the ICERICUR of a specific targetpopulation and screeningtreatment strategy Multiple points may come from the same modelling study) IFN= interferonRBV= ribavirin PegIFN=peginterferon One point out of range of figure 1(d) 1 150 976QALY with 1 HCV prevalencePegIFN+RBV
250 European Journal of Public Health
would reduce adverse effects harms and antiviral treatmentcosts and improve the cost-effectiveness of HCV screening dueto better clinical and economic outcomes Fourth eligibilityof patients for and adherence to antiviral treatment shouldbe considered In particular any HCV-screening modelshould consider a lsquowait and seersquo strategy in the screeningarm because not all patients necessarily should or want to betreated immediately after HCV detection50 HCV screeningand watchful monitoring HCV-infected patients may be moreeffective and cost-effective than screening with immediatetreatment of all HCV-infected patients since a fraction ofHCV-infected patients may not develop fibrosis or cirrhosisduring their lifetime This is particularly important for theelderlyThe age at which HCV-infected patients are identified and
treated is a very important modelling factor as well Moststudies used an average age of 40 years for the evaluatedpopulation which may be adequate for patients with CHCwhich already developed symptoms However HCV screeningmay detect HCV-infected individuals earlier at significantlyyounger age In addition certain HCV-infected populationsat risk for advanced liver disease such as intravenous druguser or ethnic minority groups who have acquired HCViatrogenically in early childhood have a significantly youngeraverage age Thus in these cases benefits from early detectionand treatment may be underestimatedDiscounting costs and effects is important and affects ICERs
since the clinical and economic benefits of screening due toavoided cirrhosis and its sequelae occur in the distant futurewhereas the costs of screening and antiviral treatment occurmuch earlier One study30 in France did not discount at all andtwo studies 2036 conducted in the UK used different discountrates for costs and effects The ICERs increased significantly insensitivity analyses when cost and effects were equallydiscounted with 35 annually (eg from 16 514 poundQALY to33 235 poundQALY36)Most studies used a lifelong time horizon for their analyses
which is the most adequate timeframe to use As benefits thatoccur far in the future will not be considered within shortertime horizons estimated cost-effectiveness ratios may be toohigh One study used a 30 year time horizon30 As cirrhosisand its complications develop slowly within 10ndash30 years eventhis time horizon may be too short and benefits may beunderestimatedAll studies included in this review take into account the
natural history of chronic Hepatitis C disease progression andmortality from CHC-related complications Only one studyused the natural history of chronic Hepatitis B diseaseprogression as at that time no information existed regardingHepatitis C progression However it was not always clearwhether slower progression rates were considered for screenedpopulations tending to present histological milder Hepatitis Ccompared to non-screened populations mostly detected bysymptoms Several studies reported that patients with mildCHC and normal ALT levels may have a reduced risk ofprogression to cirrhosis compared to patients with more severehistology or elevated ALT levels751ndash54 Furthermore analysesfor CHC patients co-infected with HIV should assume higherprogression rates to CHC-related liver diseases than analysesin non-co-infected CHC patients5556In addition most studies used age- and gender-specific
mortality rates of the general population for the backgroundmortality for CHC patients However background mortality isoften higher due to co-morbidity from other diseases such asHIV- or HBV-coinfection or in case of IDUs from continua-tion of or relapse to drug abuse Even patients with moderateCHC or cirrhosis that respond to antiviral treatment continue
to have an increased risk of developing hepatocellularcarcinoma which is associated with significant mortalityOverall this review discovered many study limitations and
the need for further systematic research in HCV screeningParticularly health-economic studies in population with lowor average HCV prevalence evaluating HCV screeningcombined with different strategies of monitoring and antiviraltreatment of HCV-positives according to current treatmentstandard are requiredFinally it must be mentioned that due to different
epidemiology health care systems disease managementpractice patterns and treatment costs in different Europeancountries results cannot be generalized and are difficult if notimpossible to be directly transferred from one country toanother Further research should focus on the development ofa Pan-European Hepatitis C screening model that fulfils thequality criteria discussed above and which can be adapted tothe context of the different health care systems and countrieswithin Europe
Conclusion
Although HCV screening fulfils general population screeningcriteria specific well-formulated national programs forHepatitis C screening are lacking in most European countriesBased on current evidence HCV screening and early treatmenthas the potential to improve average life-expectancy butshould focus on populations with elevated HCV prevalence tobe cost-effective Further research is needed to investigate thelong-term health-economic impact of HCV screening whencombined with appropriate monitoring and treatmentstrategies in different European health care systems Furtherassessments should focus on determining optimal targetgroups and settings that yield effective and cost-effectiveHCV screening strategies
Acknowledgements
We thank the members of the PanEuropean Hepatitis C ExpertPanel for providing local information and reviewing the resultsof our study Maria Buti MD Hospital General UniversitarioVall de Hebron Barcelona Spain Florin Caruntu Matei BalsInfectious Disease Institute Bucharest and Carol DavilaMedicine and Pharmacy University Bucharest RomaniaCharles Gore The Hepatitis C Trust London UK Scott DHolmberg MD MPH Epidemiology and Surveillance BranchDivision of Viral Hepatitis Prevention NCHHSTP Centers forDisease Control and Prevention Atlanta GA USA NadinePiorkowsky The European Liver Patients Association (ELPA)Germany Prof William Rosenberg Institute of HepatologyUniversity College London UK However the authors aloneare responsible for the results reported and views expressed inthe paper The authors had complete and independent controlover study design analysis and interpretation of data reportwriting and publication regardless of results
Funding
This project was supported in part by an unrestrictededucational grant from Hoffmann La-Roche Ltd BaselSwitzerland
Conflicts of interest NM has received travel support fromHoffmann La-Roche Ltd to present preliminary results of thestudy to different audiences US has received healthtechnology assessment research grants from the GermanFederal Ministry of Health and the Austrian Academy of
Cost-effectiveness of HCV-screening 251
Sciences and unrestricted research grants from ScheringPlough and Roche
Key points
Although HCV screening fulfils general populationscreening criteria specific well-formulated nationalpublic health programs for hepatitis C screening arelacking in most European countries
According to this review HCV screening with earlytreatment has the potential to improve averagelife-expectancy but should focus on populationswith elevated HCV prevalence to be cost-effectiveAppropriate target groups could be selected based onrisk factor profiles
Appropriate monitoring and treatment strategiesfor detected early disease may improve the cost-effectiveness of HCV screening
In view of the multitude of iatrogenic infectionshowever cost-effectiveness may not be the onlydecision criterion for the implementation of HCVscreening Aspects like fairness might be considered aswell
Further research should focus on the public-healthimpact of HCV screening when combined withappropriate monitoring and treatment strategies andon determining optimal target groups and settings
References
1 Weissing L Roy K Sapinho D et al Surveillance of hepatitis C infection
among injecting drug users in the European Union In Jager J Limburg W
Kretzschmar M et al editors Hepatitis C and injecting drug use
Luxembourg European Monitoring Centre for Drugs and Drug Addiction
2006 91ndash135
2 European Centre for Disease Prevention and Control (ECDC) Annual
epidemiologic report on communicable diseases in Europe 2007 http
wwwecdceuropaeu (date last accessed 28 June 2007)
3 Rantala M van de Laar MJ Surveillance and epidemiology of hepatitis B and
C in Europe ndash a review Euro Surveill 200813 Available online
httpwwweurosurveillanceorg (date last accessed 13 December 2008)
4 Alter H Seeff L Recovery persistence and sequelae in hepatitis C virus
infection a perspective on long-term outcome Semin Liver Dis
20002017ndash35
5 Anonymous EASL international consensus conference on hepatitis C
Paris 26ndash27 February 1999 Consensus statement J Hepatol
199931(Suppl 1)3ndash8
6 Dore GJ Freeman AJ Law M Kaldor JM Is severe liver disease a common
outcome for people with chronic hepatitis C J Gastroenterol Hepatol
200217423ndash30
7 Freeman A Dore G Law M et al Estimating progression to cirrhosis in
chronic hepatitis C virus infection Hepatology 200134809ndash16
8 Freeman AJ Law MG Kaldor JM Dore GJ Predicting progression
to cirrhosis in chronic hepatitis C virus infection J Viral Hepat
200310285ndash93
9 Hopf U Moller B Kuther D et al Long-term follow-up of posttransfusion
and sporadic chronic hepatitis non-A non-B and frequency of circulating
antibodies to hepatitis C virus (HCV) J Hepatol 19901069ndash76
10 Koretz R Abbey H Coleman E Gitnick G Non-A non-B post-transfusion
hepatitis Looking back in the second decade Ann Intern Med
1993119110ndash5
11 Mattsson L Outcome of acute symptomatic non-A non-B hepatitis
a 13-year follow-up study of hepatitis C virus markers Liver
199313274ndash8
12 Tremolada F Casarin C Alberti A et al Long-term follow-up of non-A
non-B (type C) post-transfusion hepatitis J Hepatol 199216273ndash81
13 World Health Organization (WHO) Global surveillance and control of
hepatitis C Report of a WHO consultation organized in collaboration with
the Viral Hepatitis Prevention Board Antwerp Belgium J Viral Hepatitis
1999635ndash47
14 Wilson J Jungner Y Principles and practice of mass screening for disease
Bol Oficina Sanit Panam 196865281ndash393
15 Wilson J The evaluation of the worth of early disease detection J R Coll Gen
Pract 196816(Suppl 2)48ndash57
16 Brady B Siebert U Sroczynski G et al Pegylated interferon combined with
ribavirin for chronic hepatitis C virus infection an economic evaluation
[Technology Report No 82] Ottawa Canadian Agency for Drugs and
Technologies in Health 2007
17 Wright M Grieve R Roberts J Main J Thomas HC on behalf of the UK
Mild Hepatitis C Trial Investigators Health benefits of antiviral therapy for
mild chronic hepatitis C randomised controlled trial and economic
evaluation Health Technol Assess 2006101ndash132
18 Maheshwari A Ray S Thuluvath PJ Acute hepatitis C Lancet
2008372321ndash32
19 Jullien-Depradeux AM Bloch J Le Quellec-Nathan M Abenhaim A
National campaign against hepatitis C in France (1999ndash2002) Acta
Gastroenterol Belg 200265112ndash4
20 Stein K Dalziel K Walker A et al Screening for hepatitis C among injecting
drug users and in genitourinary medicine clinics systematic reviews of
effectiveness modelling study and national survey of current practice
Health Technol Assess 200261ndash122
21 Department of HealthGeneral Health Protection Hepatitis C Action Plan
for England July 2004 Available at wwwdhgovukpublications (date last
accessed 12 November 2006
22 European Liver Patient Association (ELPA) European Parliament demands
EU-wide action on Hepatitis C 2007 httpwwwelpaorg (date last accessed
15 May 2007)
23 European Liver Patient Association (ELPA) Promoting Hepatitis C Screening
in Europe 2007 httpwwwelpaorg (date last accessed 8 May 2008)
24 Shepherd J Brodin HFT Cave CB et al Clinical- and cost-effectiveness of
pegylated interferon alfa in the treatment of chronic hepatitis C a systematic
review and economic evaluation Int J Technol Assess Health Care
20052147ndash54
25 Siebert U Sroczynski G on behalf of the German Hepatitis C Model
(GEHMO) Group and the HTA Expert Panel on Hepatitis C Antiviral
therapy for patients with chronic hepatitis C in Germany Evaluation of
effectiveness and cost-effectiveness of initial combination therapy with
InterferonPeginterferon plus Ribavirin Series of the German Institute for
Medical Documentation and Information commissioned by the Federal
Ministry of Health and Social Security Cologne DIMDI 2003
26 Organisation for Economic Co-operation and Development (OECD) Gross
domestic product purchasing power parities 2006 httpwwwoecdorg
27 German Federal Statistical Office German Consumer Price Index (CPI) 2006
httpwwwdestatisde
28 Population Division of the Department of Economic and Social Affairs of the
United Nations Secretariat World population prospects the 2006 revision and
world urbanization prospects the 2005 revision httpesaunorgunpp
29 Leal P Stein K Rosenberg W What is the cost utility of screening for
hepatitis C virus (HCV) in intravenous drug users J Med Screen
19996124ndash31
30 Jusot JF Colin C Cost-effectiveness analysis of strategies for hepatitis C
screening in French blood recipients Eur J Public Health 200111373ndash9
31 Singer ME Younossi ZM Cost effectiveness of screening for hepatitis C virus
in asymptomatic average-risk adults Am J Med 2001111614ndash21
32 Loubiere S Rotily M Moatti JP Prevention could be less cost-effective than
cure the case of hepatitis C screening policies in France Int J Technol Assess
Health Care 200319632ndash45
33 Stein K Dalziel K Walker A et al Screening for hepatitis C in genito-urinary
medicine clinics a cost utility analysis J Hepatol 200339814ndash25
34 Stein K Dalziel K Walker A et al Screening for Hepatitis C in injecting drug
users a cost utility analysis J Public Health 20042661ndash71
252 European Journal of Public Health
35 Plunkett BA Grobman WA Routine hepatitis C virus screening in
pregnancy a cost-effectiveness analysis Am J Obstet Gynecol
20051921153ndash61
36 Castelnuovo E Thompson-Coon J Pitt M et al The cost-effectiveness of
testing for hepatitis C in former injecting drug users Health Technol Assess
200610 iiindashiv ixndashxii 1ndash93
37 Thompson Coon J Castelnuovo E Pitt M et al Case finding for hepatitis C
in primary care a cost utility analysis Fam Pract 200623393ndash406
38 Sherman M Shafran S Burak K et al Management of chronic hepatitis C
consensus guidelines Can J Gastroenterol 200721(Suppl C)25Cndash34C
39 NIH Consensus Statement National institutes of health consensus devel-
opment conference management of Hepatitis C 2002 - June 10ndash12 2002
Hepatology 200236(5 Suppl 1)S3ndash20
40 Zeuzem S Standard treatment of acute and chronic hepatitis C
Z Gastroenterol 200442714ndash9
41 Siebert U Sroczynski G Hillemanns P et al The German cervical cancer
screening model development and validation of a decision-analytic model
for cervical cancer screening in Germany Eur J Public Health
200616185ndash92
42 Sanders G Bayoumi A Sundaram V et al Cost-effectiveness of screening for
HIV in the era of highly active antiretroviral therapy N Engl J Med
2005352570ndash85
43 Payne N Chilcott J McGoogan E Liquid-based cytology in cervical
screening a rapid and systematic review Health Technol Assess 200041ndash73
44 Siebert U Muth C Sroczynski G et al Liquid-based preparation and
computer-assisted examination of cervical smears in cervical cancer screening
Clinical effectiveness economic evaluation and systematic decision analysis
Series of the German Institute for Medical Documentation and Information
commissioned by the Federal Ministry of Health and Social Security St
Augustin Asgard 2004
45 McCrory DC Matchar DB Evaluation of cervical cytology - systematic
review HTA Report Agency for Health Care Research and Quality (AHRQ)
Report No 5 1999
46 Tengs T Adams M Pliskin J et al Five-hundred life-saving interventions
and their cost-effectiveness Risk Anal 199515369ndash90
47 Siebert U When should decision-analytic modeling be used in the
economic evaluation of health care [Editorial] Eur J Health Econ
20034143ndash50
48 Shamir R Hernell O Leshno M Cost-effectiveness analysis of
screening for celiac disease in adult population Med Decis Making
200626282ndash93
49 Hayashino Y Shimbo T Tsujii S et al Cost-effectiveness of coronary artery
disease screening in asymptomatic patients with type 2 diabetes and other
atherogenic risk factors in Japan factors influencing on international
application of evidence-based guidelines Int J Cardiol 200711888ndash96
50 Wong JB Koff RS Watchful waiting with periodic liver biopsy versus
immediate empirical therapy for histologically mild chronic hepatitis C A
cost-effectiveness analysis Ann Intern Med 2000133665ndash75
51 Alberti A Morsica G Chemello L et al Hepatitis C viremia and liver
disease in symptom-free individuals with anti-HCV Lancet
1992340697ndash8
52 Alter H Conry-Cantilena C Melpolder J et al Hepatitis C in asymptomatic
blood donors Hepatology 199726(3 Suppl 1)29Sndash33S
53 Marcellin P Levy S Erlinger S Therapy of hepatitis C patients with normal
aminotransferase levels Hepatology 199726(3 Suppl 1)133Sndash6S
54 Mathurin P Moussalli J Cadranel J et al Slow progression rate of fibrosis in
hepatitis C virus patients with persistently normal alanine transaminase
activity Hepatology 199827868ndash72
55 Graham CS Baden LR Yu E et al Influence of human immunodeficiency
virus infection on the course of hepatitis C virus infection a meta-analysis
Clin Infect Dis 200133562ndash9
56 Soto B Sanchez-Quijano A Rodrigo L et al Human immunodeficiency
virus infection modifies the natural history of chronic parenterally-acquired
hepatitis C with an unusually rapid progression to cirrhosis J Hepatol
1997261ndash5
Received 14 September 2008 accepted 22 December 2008
Cost-effectiveness of HCV-screening 253
Table
2Disco
untedincrementalco
st-effectiveness-ratios(ICER)anddisco
untedincrementalco
st-utility-ratios(ICUR)forscreeningforhepatitisC
StudyCountry
CurrencyYear
Perspective
Disco
unt
rate
()
Comparator
TargetPopulation
ICER
(ELYG)
ICUR
(EQ
ALY
)
Castelnuovo
etal36
(ThompsonCoon
UKpound2004
NationalHealth
6(costs)15
(effects)
Systematicscreeningvsnosystematicscreening
(spontaneouspresentationto
screeningpossible)
Form
erIDUsgeneralcasemeanage37ye
ars49
HCV
preva
lence
30232
24858
etal37)
Services(N
HS)
HCV-positive
sreceivetreatm
entPegIFN+RBV
Generalpracticemeanage37ye
ars125
HCVpreva
lence
38633
23321
NHSRampD
HTA
Programme
Form
erandcu
rrentIDUsin
generalpracticemeanage
37ye
ars49
HCV
preva
lence
30194
24827
UK
Allpatients
assessedforHBVva
ccinationattendingdrugand
alcoholservicesmeanage37ye
ars68
HCV
preva
lence
28689
26365
(Screeningincludedgenerallecture
onHCV)
Prisoners
atreceptionmeanage37ye
ars16
HCVpreva
lence
50833
30231
(Screeningincludedlecture
withfocu
sonIDU
andrisk
ofHCV)
Prisoners
atreceptionmeanage37ye
ars42
HCVpreva
lence
40301
24813
JusotandColin30
France
FF1996Health
care
system
30ye
ars
time
Nodisco
unt
rate
ScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipientslt40ye
ars3
HCV
preva
lence
140674
mdash
horizo
nScreeningwithEIA3aftertransfusiontreatm
ent
forHCV-positive
swithKnodellscore
5IFN
vs
noscreening+nomedicaltherapy
Bloodrecipients
40ndash6
5ye
ars
orreceivinglow-volume
transfusionsorhospitalize
din
asurgery
department
3
HCV
preva
lence
477654
mdash
ScreeningwithEIA3before
andaftertransfusion
(treatm
entsameasabove
)
Bloodrecipients
receivinghigh-volumetransfusions
3
HCV
preva
lence
144970
mdash
Lealetal29
UKpound1997na
6ScreeningvsnoscreeningHCV-positive
swithmoderate
IDUsin
contact
withdrugservices60
HCV
preva
lence
mdash119754
UK
toseve
reCHCreceivetreatm
entIFN
(IFN
+RBV)
(18267-34537a)
Loubiere
etal32
France
E1998Health
care
system
3ScreeningwithEIA3+EIA3vsnoscreening+notreatm
ent
50
ofCHCcasesand40
ofcirrhosiscasesreceive
treatm
entIFN+RBV
IDUs80
HCV
preva
lence
3881
mdash
ScreeningwithEIA3+PCRvsnoscreening+notreatm
ent
treatm
entasabove
9742
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
Patients
transfusedbefore
19917
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
243737
mdash
ScreeningwithEIA3+EIA3vsnoscreening+treatm
entif
cirrhosistreatm
entasabove
GeneralFrench
population12
HCV
preva
lence
Dominatedby
EIA3+PCR
mdash
ScreeningwithEIA3+PCRvsnoscreening+treatm
entif
cirrhosistreatm
entasabove
5005
mdash
Plunkett
etal35
USA
US$
2003Health
care
system
3ScreeningvsnoscreeningHCV-positive
sreceivetreatm
ent
PegIFN+RBV
Pregnantwomen1
HCV
preva
lence
mdashNoscreening
dominant
Asabove
plusCaesariandelive
rymdash
1150976
Singeretal31
USA
US$
2001S
ocietal
3Screeningvsnoscreening20
ofHCV-positive
sreceive
treatm
entIFN+RBV
Asymptomatic
ave
ragerisk
adultsmeanage35ye
ars
38
HCV
preva
lence
mdashNoscreening
dominant
Stein
etal20
(Stein
etal3334)
UKpound2001
NationalHealth
6(costs)15
(effects)
Screeningvsnoscreening50
ofHCV-positive
swith
moderate
CHCreceivetreatm
entIFN+RBV(PegIFN+RBV)
IDUsin
contact
withdrugservicesmeanage32ye
ars
32
HCV
preva
lence
mdash46707(23598)
NHSRampD
HTA
Programme
Services(N
HS)
Allscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV(PegIFN+RBV)
Genito-urinary
medicineclinic
attendeesmeanage
36ye
ars15
HCVpreva
lence
mdash140471(77052)
UK
IDUsscreened50
ofHCV-positive
swithmoderate
CHC
receivetreatm
entIFN+RBV
32
HCVpreva
lence
mdash45076
aDependingontreatm
entduration(24or48weeks)
andribavirindosage(1000or1200mgd)
na=
notava
ilableIFN=interferonRBV=ribavirinEIA3=enzy
melinkedassaythirdgenerationPCR=polymerase
chain
reaction
Cost-effectiveness of HCV-screening 249
well-accepted screening programs cytological screening forcervical cancer every 3 years compared to no screening costspound1800 per life year gained in the UK43 1400ELYG inGermany44 and 8400 US$LYG in the USA45 Screening blooddonors for HIV costs 14 000 US$LYG46 Given 1 undetectedHIV-prevalence one-time HIV screening in US health caresettings would result in 41 700 US$QALY screening every 5years 123 600 US$QALY42
In the absence of long-term clinical trials all results wereretrieved from decision-analytic studies which link diagnosticand clinical short-term outcomes (eg test sensitivity andspecificity or viral response) to clinical long-term outcomes(eg mortality and long-term quality of life)47 The includedstudies were heterogeneous in regard to health economicanalysis techniques (eg time horizons discounting etc)HCV population prevalence acquisition risk factors andantiviral therapy Therefore the outcomes in terms of lifeyears gained quality adjusted life years and incremental costeffectiveness ratios varied over a wide range However severalresults were logical and predictable for example screening ismore cost effective in higher prevalence or higher riskpopulationsmdasha result that has been reported for other diseasestoo4849
Like all decision-analytic models screening models mustsimplify the real world for more transparency and thepossibility to analyse specific research questions47 However
some methodological and structural model assumptions mayhave an important impact on clinical and economic outcomesand could lead to bias in favour for or against HCV screeningThus it is important to discuss some aspects essential fora valuable screening modelFirst it is important to allow for the possibility of
spontaneous case detection by symptoms with subsequentantiviral treatment in the non-screening strategy of any HCV-screening model Without these estimates the benefits of thescreening strategy are overestimated and outcomes are biasedin favour of the HCV-screening strategy Second the settingof antiviral treatment in both strategies is very important Notreatment in the non-screening strategy or lsquowait and treatcirrhosisrsquo vs lsquoscreen and treat all HCV-positive patientsrsquomay overestimate both the incremental benefits and costs ofscreening Therefore antiviral treatment should be consideredfor chronic HCV-patients (detected through screeningsymptoms or spontaneous presentation) in both strategiesaccording to recent treatment guidelines Third moststudies considered antiviral therapy with interferon plusribavirin20293132 and two studies used even interferonmonotherapy293032 Only three studies considered peginter-feron plus ribavirin203536 Having better treatment optionsand administering antiviral treatment according to genotype-specific guidelines with early treatment stop for patients notresponding would allow tailoring treatment efficiently which
Figure 1 Incremental cost-effectiveness ratio of screening compared to no screening in Euro per life year gained (EuroLYG) orquality-adjusted life-year gained (EuroQALY) for different HCV prevalence in the target population (a) ICER (in EuroLYG) ofHCV screening and different antiviral treatment (b) ICUR (in EuroQALY) of HCV screening and different antiviral treatment (c)ICER (in EuroLYG) of HCV screening and antiviral treatment with peginterferon plus ribavirin (d) ICUR (in EuroQALY) of HCVscreening and antiviral treatment with peginterferon plus ribavirin (Each point represents the ICERICUR of a specific targetpopulation and screeningtreatment strategy Multiple points may come from the same modelling study) IFN= interferonRBV= ribavirin PegIFN=peginterferon One point out of range of figure 1(d) 1 150 976QALY with 1 HCV prevalencePegIFN+RBV
250 European Journal of Public Health
would reduce adverse effects harms and antiviral treatmentcosts and improve the cost-effectiveness of HCV screening dueto better clinical and economic outcomes Fourth eligibilityof patients for and adherence to antiviral treatment shouldbe considered In particular any HCV-screening modelshould consider a lsquowait and seersquo strategy in the screeningarm because not all patients necessarily should or want to betreated immediately after HCV detection50 HCV screeningand watchful monitoring HCV-infected patients may be moreeffective and cost-effective than screening with immediatetreatment of all HCV-infected patients since a fraction ofHCV-infected patients may not develop fibrosis or cirrhosisduring their lifetime This is particularly important for theelderlyThe age at which HCV-infected patients are identified and
treated is a very important modelling factor as well Moststudies used an average age of 40 years for the evaluatedpopulation which may be adequate for patients with CHCwhich already developed symptoms However HCV screeningmay detect HCV-infected individuals earlier at significantlyyounger age In addition certain HCV-infected populationsat risk for advanced liver disease such as intravenous druguser or ethnic minority groups who have acquired HCViatrogenically in early childhood have a significantly youngeraverage age Thus in these cases benefits from early detectionand treatment may be underestimatedDiscounting costs and effects is important and affects ICERs
since the clinical and economic benefits of screening due toavoided cirrhosis and its sequelae occur in the distant futurewhereas the costs of screening and antiviral treatment occurmuch earlier One study30 in France did not discount at all andtwo studies 2036 conducted in the UK used different discountrates for costs and effects The ICERs increased significantly insensitivity analyses when cost and effects were equallydiscounted with 35 annually (eg from 16 514 poundQALY to33 235 poundQALY36)Most studies used a lifelong time horizon for their analyses
which is the most adequate timeframe to use As benefits thatoccur far in the future will not be considered within shortertime horizons estimated cost-effectiveness ratios may be toohigh One study used a 30 year time horizon30 As cirrhosisand its complications develop slowly within 10ndash30 years eventhis time horizon may be too short and benefits may beunderestimatedAll studies included in this review take into account the
natural history of chronic Hepatitis C disease progression andmortality from CHC-related complications Only one studyused the natural history of chronic Hepatitis B diseaseprogression as at that time no information existed regardingHepatitis C progression However it was not always clearwhether slower progression rates were considered for screenedpopulations tending to present histological milder Hepatitis Ccompared to non-screened populations mostly detected bysymptoms Several studies reported that patients with mildCHC and normal ALT levels may have a reduced risk ofprogression to cirrhosis compared to patients with more severehistology or elevated ALT levels751ndash54 Furthermore analysesfor CHC patients co-infected with HIV should assume higherprogression rates to CHC-related liver diseases than analysesin non-co-infected CHC patients5556In addition most studies used age- and gender-specific
mortality rates of the general population for the backgroundmortality for CHC patients However background mortality isoften higher due to co-morbidity from other diseases such asHIV- or HBV-coinfection or in case of IDUs from continua-tion of or relapse to drug abuse Even patients with moderateCHC or cirrhosis that respond to antiviral treatment continue
to have an increased risk of developing hepatocellularcarcinoma which is associated with significant mortalityOverall this review discovered many study limitations and
the need for further systematic research in HCV screeningParticularly health-economic studies in population with lowor average HCV prevalence evaluating HCV screeningcombined with different strategies of monitoring and antiviraltreatment of HCV-positives according to current treatmentstandard are requiredFinally it must be mentioned that due to different
epidemiology health care systems disease managementpractice patterns and treatment costs in different Europeancountries results cannot be generalized and are difficult if notimpossible to be directly transferred from one country toanother Further research should focus on the development ofa Pan-European Hepatitis C screening model that fulfils thequality criteria discussed above and which can be adapted tothe context of the different health care systems and countrieswithin Europe
Conclusion
Although HCV screening fulfils general population screeningcriteria specific well-formulated national programs forHepatitis C screening are lacking in most European countriesBased on current evidence HCV screening and early treatmenthas the potential to improve average life-expectancy butshould focus on populations with elevated HCV prevalence tobe cost-effective Further research is needed to investigate thelong-term health-economic impact of HCV screening whencombined with appropriate monitoring and treatmentstrategies in different European health care systems Furtherassessments should focus on determining optimal targetgroups and settings that yield effective and cost-effectiveHCV screening strategies
Acknowledgements
We thank the members of the PanEuropean Hepatitis C ExpertPanel for providing local information and reviewing the resultsof our study Maria Buti MD Hospital General UniversitarioVall de Hebron Barcelona Spain Florin Caruntu Matei BalsInfectious Disease Institute Bucharest and Carol DavilaMedicine and Pharmacy University Bucharest RomaniaCharles Gore The Hepatitis C Trust London UK Scott DHolmberg MD MPH Epidemiology and Surveillance BranchDivision of Viral Hepatitis Prevention NCHHSTP Centers forDisease Control and Prevention Atlanta GA USA NadinePiorkowsky The European Liver Patients Association (ELPA)Germany Prof William Rosenberg Institute of HepatologyUniversity College London UK However the authors aloneare responsible for the results reported and views expressed inthe paper The authors had complete and independent controlover study design analysis and interpretation of data reportwriting and publication regardless of results
Funding
This project was supported in part by an unrestrictededucational grant from Hoffmann La-Roche Ltd BaselSwitzerland
Conflicts of interest NM has received travel support fromHoffmann La-Roche Ltd to present preliminary results of thestudy to different audiences US has received healthtechnology assessment research grants from the GermanFederal Ministry of Health and the Austrian Academy of
Cost-effectiveness of HCV-screening 251
Sciences and unrestricted research grants from ScheringPlough and Roche
Key points
Although HCV screening fulfils general populationscreening criteria specific well-formulated nationalpublic health programs for hepatitis C screening arelacking in most European countries
According to this review HCV screening with earlytreatment has the potential to improve averagelife-expectancy but should focus on populationswith elevated HCV prevalence to be cost-effectiveAppropriate target groups could be selected based onrisk factor profiles
Appropriate monitoring and treatment strategiesfor detected early disease may improve the cost-effectiveness of HCV screening
In view of the multitude of iatrogenic infectionshowever cost-effectiveness may not be the onlydecision criterion for the implementation of HCVscreening Aspects like fairness might be considered aswell
Further research should focus on the public-healthimpact of HCV screening when combined withappropriate monitoring and treatment strategies andon determining optimal target groups and settings
References
1 Weissing L Roy K Sapinho D et al Surveillance of hepatitis C infection
among injecting drug users in the European Union In Jager J Limburg W
Kretzschmar M et al editors Hepatitis C and injecting drug use
Luxembourg European Monitoring Centre for Drugs and Drug Addiction
2006 91ndash135
2 European Centre for Disease Prevention and Control (ECDC) Annual
epidemiologic report on communicable diseases in Europe 2007 http
wwwecdceuropaeu (date last accessed 28 June 2007)
3 Rantala M van de Laar MJ Surveillance and epidemiology of hepatitis B and
C in Europe ndash a review Euro Surveill 200813 Available online
httpwwweurosurveillanceorg (date last accessed 13 December 2008)
4 Alter H Seeff L Recovery persistence and sequelae in hepatitis C virus
infection a perspective on long-term outcome Semin Liver Dis
20002017ndash35
5 Anonymous EASL international consensus conference on hepatitis C
Paris 26ndash27 February 1999 Consensus statement J Hepatol
199931(Suppl 1)3ndash8
6 Dore GJ Freeman AJ Law M Kaldor JM Is severe liver disease a common
outcome for people with chronic hepatitis C J Gastroenterol Hepatol
200217423ndash30
7 Freeman A Dore G Law M et al Estimating progression to cirrhosis in
chronic hepatitis C virus infection Hepatology 200134809ndash16
8 Freeman AJ Law MG Kaldor JM Dore GJ Predicting progression
to cirrhosis in chronic hepatitis C virus infection J Viral Hepat
200310285ndash93
9 Hopf U Moller B Kuther D et al Long-term follow-up of posttransfusion
and sporadic chronic hepatitis non-A non-B and frequency of circulating
antibodies to hepatitis C virus (HCV) J Hepatol 19901069ndash76
10 Koretz R Abbey H Coleman E Gitnick G Non-A non-B post-transfusion
hepatitis Looking back in the second decade Ann Intern Med
1993119110ndash5
11 Mattsson L Outcome of acute symptomatic non-A non-B hepatitis
a 13-year follow-up study of hepatitis C virus markers Liver
199313274ndash8
12 Tremolada F Casarin C Alberti A et al Long-term follow-up of non-A
non-B (type C) post-transfusion hepatitis J Hepatol 199216273ndash81
13 World Health Organization (WHO) Global surveillance and control of
hepatitis C Report of a WHO consultation organized in collaboration with
the Viral Hepatitis Prevention Board Antwerp Belgium J Viral Hepatitis
1999635ndash47
14 Wilson J Jungner Y Principles and practice of mass screening for disease
Bol Oficina Sanit Panam 196865281ndash393
15 Wilson J The evaluation of the worth of early disease detection J R Coll Gen
Pract 196816(Suppl 2)48ndash57
16 Brady B Siebert U Sroczynski G et al Pegylated interferon combined with
ribavirin for chronic hepatitis C virus infection an economic evaluation
[Technology Report No 82] Ottawa Canadian Agency for Drugs and
Technologies in Health 2007
17 Wright M Grieve R Roberts J Main J Thomas HC on behalf of the UK
Mild Hepatitis C Trial Investigators Health benefits of antiviral therapy for
mild chronic hepatitis C randomised controlled trial and economic
evaluation Health Technol Assess 2006101ndash132
18 Maheshwari A Ray S Thuluvath PJ Acute hepatitis C Lancet
2008372321ndash32
19 Jullien-Depradeux AM Bloch J Le Quellec-Nathan M Abenhaim A
National campaign against hepatitis C in France (1999ndash2002) Acta
Gastroenterol Belg 200265112ndash4
20 Stein K Dalziel K Walker A et al Screening for hepatitis C among injecting
drug users and in genitourinary medicine clinics systematic reviews of
effectiveness modelling study and national survey of current practice
Health Technol Assess 200261ndash122
21 Department of HealthGeneral Health Protection Hepatitis C Action Plan
for England July 2004 Available at wwwdhgovukpublications (date last
accessed 12 November 2006
22 European Liver Patient Association (ELPA) European Parliament demands
EU-wide action on Hepatitis C 2007 httpwwwelpaorg (date last accessed
15 May 2007)
23 European Liver Patient Association (ELPA) Promoting Hepatitis C Screening
in Europe 2007 httpwwwelpaorg (date last accessed 8 May 2008)
24 Shepherd J Brodin HFT Cave CB et al Clinical- and cost-effectiveness of
pegylated interferon alfa in the treatment of chronic hepatitis C a systematic
review and economic evaluation Int J Technol Assess Health Care
20052147ndash54
25 Siebert U Sroczynski G on behalf of the German Hepatitis C Model
(GEHMO) Group and the HTA Expert Panel on Hepatitis C Antiviral
therapy for patients with chronic hepatitis C in Germany Evaluation of
effectiveness and cost-effectiveness of initial combination therapy with
InterferonPeginterferon plus Ribavirin Series of the German Institute for
Medical Documentation and Information commissioned by the Federal
Ministry of Health and Social Security Cologne DIMDI 2003
26 Organisation for Economic Co-operation and Development (OECD) Gross
domestic product purchasing power parities 2006 httpwwwoecdorg
27 German Federal Statistical Office German Consumer Price Index (CPI) 2006
httpwwwdestatisde
28 Population Division of the Department of Economic and Social Affairs of the
United Nations Secretariat World population prospects the 2006 revision and
world urbanization prospects the 2005 revision httpesaunorgunpp
29 Leal P Stein K Rosenberg W What is the cost utility of screening for
hepatitis C virus (HCV) in intravenous drug users J Med Screen
19996124ndash31
30 Jusot JF Colin C Cost-effectiveness analysis of strategies for hepatitis C
screening in French blood recipients Eur J Public Health 200111373ndash9
31 Singer ME Younossi ZM Cost effectiveness of screening for hepatitis C virus
in asymptomatic average-risk adults Am J Med 2001111614ndash21
32 Loubiere S Rotily M Moatti JP Prevention could be less cost-effective than
cure the case of hepatitis C screening policies in France Int J Technol Assess
Health Care 200319632ndash45
33 Stein K Dalziel K Walker A et al Screening for hepatitis C in genito-urinary
medicine clinics a cost utility analysis J Hepatol 200339814ndash25
34 Stein K Dalziel K Walker A et al Screening for Hepatitis C in injecting drug
users a cost utility analysis J Public Health 20042661ndash71
252 European Journal of Public Health
35 Plunkett BA Grobman WA Routine hepatitis C virus screening in
pregnancy a cost-effectiveness analysis Am J Obstet Gynecol
20051921153ndash61
36 Castelnuovo E Thompson-Coon J Pitt M et al The cost-effectiveness of
testing for hepatitis C in former injecting drug users Health Technol Assess
200610 iiindashiv ixndashxii 1ndash93
37 Thompson Coon J Castelnuovo E Pitt M et al Case finding for hepatitis C
in primary care a cost utility analysis Fam Pract 200623393ndash406
38 Sherman M Shafran S Burak K et al Management of chronic hepatitis C
consensus guidelines Can J Gastroenterol 200721(Suppl C)25Cndash34C
39 NIH Consensus Statement National institutes of health consensus devel-
opment conference management of Hepatitis C 2002 - June 10ndash12 2002
Hepatology 200236(5 Suppl 1)S3ndash20
40 Zeuzem S Standard treatment of acute and chronic hepatitis C
Z Gastroenterol 200442714ndash9
41 Siebert U Sroczynski G Hillemanns P et al The German cervical cancer
screening model development and validation of a decision-analytic model
for cervical cancer screening in Germany Eur J Public Health
200616185ndash92
42 Sanders G Bayoumi A Sundaram V et al Cost-effectiveness of screening for
HIV in the era of highly active antiretroviral therapy N Engl J Med
2005352570ndash85
43 Payne N Chilcott J McGoogan E Liquid-based cytology in cervical
screening a rapid and systematic review Health Technol Assess 200041ndash73
44 Siebert U Muth C Sroczynski G et al Liquid-based preparation and
computer-assisted examination of cervical smears in cervical cancer screening
Clinical effectiveness economic evaluation and systematic decision analysis
Series of the German Institute for Medical Documentation and Information
commissioned by the Federal Ministry of Health and Social Security St
Augustin Asgard 2004
45 McCrory DC Matchar DB Evaluation of cervical cytology - systematic
review HTA Report Agency for Health Care Research and Quality (AHRQ)
Report No 5 1999
46 Tengs T Adams M Pliskin J et al Five-hundred life-saving interventions
and their cost-effectiveness Risk Anal 199515369ndash90
47 Siebert U When should decision-analytic modeling be used in the
economic evaluation of health care [Editorial] Eur J Health Econ
20034143ndash50
48 Shamir R Hernell O Leshno M Cost-effectiveness analysis of
screening for celiac disease in adult population Med Decis Making
200626282ndash93
49 Hayashino Y Shimbo T Tsujii S et al Cost-effectiveness of coronary artery
disease screening in asymptomatic patients with type 2 diabetes and other
atherogenic risk factors in Japan factors influencing on international
application of evidence-based guidelines Int J Cardiol 200711888ndash96
50 Wong JB Koff RS Watchful waiting with periodic liver biopsy versus
immediate empirical therapy for histologically mild chronic hepatitis C A
cost-effectiveness analysis Ann Intern Med 2000133665ndash75
51 Alberti A Morsica G Chemello L et al Hepatitis C viremia and liver
disease in symptom-free individuals with anti-HCV Lancet
1992340697ndash8
52 Alter H Conry-Cantilena C Melpolder J et al Hepatitis C in asymptomatic
blood donors Hepatology 199726(3 Suppl 1)29Sndash33S
53 Marcellin P Levy S Erlinger S Therapy of hepatitis C patients with normal
aminotransferase levels Hepatology 199726(3 Suppl 1)133Sndash6S
54 Mathurin P Moussalli J Cadranel J et al Slow progression rate of fibrosis in
hepatitis C virus patients with persistently normal alanine transaminase
activity Hepatology 199827868ndash72
55 Graham CS Baden LR Yu E et al Influence of human immunodeficiency
virus infection on the course of hepatitis C virus infection a meta-analysis
Clin Infect Dis 200133562ndash9
56 Soto B Sanchez-Quijano A Rodrigo L et al Human immunodeficiency
virus infection modifies the natural history of chronic parenterally-acquired
hepatitis C with an unusually rapid progression to cirrhosis J Hepatol
1997261ndash5
Received 14 September 2008 accepted 22 December 2008
Cost-effectiveness of HCV-screening 253
well-accepted screening programs cytological screening forcervical cancer every 3 years compared to no screening costspound1800 per life year gained in the UK43 1400ELYG inGermany44 and 8400 US$LYG in the USA45 Screening blooddonors for HIV costs 14 000 US$LYG46 Given 1 undetectedHIV-prevalence one-time HIV screening in US health caresettings would result in 41 700 US$QALY screening every 5years 123 600 US$QALY42
In the absence of long-term clinical trials all results wereretrieved from decision-analytic studies which link diagnosticand clinical short-term outcomes (eg test sensitivity andspecificity or viral response) to clinical long-term outcomes(eg mortality and long-term quality of life)47 The includedstudies were heterogeneous in regard to health economicanalysis techniques (eg time horizons discounting etc)HCV population prevalence acquisition risk factors andantiviral therapy Therefore the outcomes in terms of lifeyears gained quality adjusted life years and incremental costeffectiveness ratios varied over a wide range However severalresults were logical and predictable for example screening ismore cost effective in higher prevalence or higher riskpopulationsmdasha result that has been reported for other diseasestoo4849
Like all decision-analytic models screening models mustsimplify the real world for more transparency and thepossibility to analyse specific research questions47 However
some methodological and structural model assumptions mayhave an important impact on clinical and economic outcomesand could lead to bias in favour for or against HCV screeningThus it is important to discuss some aspects essential fora valuable screening modelFirst it is important to allow for the possibility of
spontaneous case detection by symptoms with subsequentantiviral treatment in the non-screening strategy of any HCV-screening model Without these estimates the benefits of thescreening strategy are overestimated and outcomes are biasedin favour of the HCV-screening strategy Second the settingof antiviral treatment in both strategies is very important Notreatment in the non-screening strategy or lsquowait and treatcirrhosisrsquo vs lsquoscreen and treat all HCV-positive patientsrsquomay overestimate both the incremental benefits and costs ofscreening Therefore antiviral treatment should be consideredfor chronic HCV-patients (detected through screeningsymptoms or spontaneous presentation) in both strategiesaccording to recent treatment guidelines Third moststudies considered antiviral therapy with interferon plusribavirin20293132 and two studies used even interferonmonotherapy293032 Only three studies considered peginter-feron plus ribavirin203536 Having better treatment optionsand administering antiviral treatment according to genotype-specific guidelines with early treatment stop for patients notresponding would allow tailoring treatment efficiently which
Figure 1 Incremental cost-effectiveness ratio of screening compared to no screening in Euro per life year gained (EuroLYG) orquality-adjusted life-year gained (EuroQALY) for different HCV prevalence in the target population (a) ICER (in EuroLYG) ofHCV screening and different antiviral treatment (b) ICUR (in EuroQALY) of HCV screening and different antiviral treatment (c)ICER (in EuroLYG) of HCV screening and antiviral treatment with peginterferon plus ribavirin (d) ICUR (in EuroQALY) of HCVscreening and antiviral treatment with peginterferon plus ribavirin (Each point represents the ICERICUR of a specific targetpopulation and screeningtreatment strategy Multiple points may come from the same modelling study) IFN= interferonRBV= ribavirin PegIFN=peginterferon One point out of range of figure 1(d) 1 150 976QALY with 1 HCV prevalencePegIFN+RBV
250 European Journal of Public Health
would reduce adverse effects harms and antiviral treatmentcosts and improve the cost-effectiveness of HCV screening dueto better clinical and economic outcomes Fourth eligibilityof patients for and adherence to antiviral treatment shouldbe considered In particular any HCV-screening modelshould consider a lsquowait and seersquo strategy in the screeningarm because not all patients necessarily should or want to betreated immediately after HCV detection50 HCV screeningand watchful monitoring HCV-infected patients may be moreeffective and cost-effective than screening with immediatetreatment of all HCV-infected patients since a fraction ofHCV-infected patients may not develop fibrosis or cirrhosisduring their lifetime This is particularly important for theelderlyThe age at which HCV-infected patients are identified and
treated is a very important modelling factor as well Moststudies used an average age of 40 years for the evaluatedpopulation which may be adequate for patients with CHCwhich already developed symptoms However HCV screeningmay detect HCV-infected individuals earlier at significantlyyounger age In addition certain HCV-infected populationsat risk for advanced liver disease such as intravenous druguser or ethnic minority groups who have acquired HCViatrogenically in early childhood have a significantly youngeraverage age Thus in these cases benefits from early detectionand treatment may be underestimatedDiscounting costs and effects is important and affects ICERs
since the clinical and economic benefits of screening due toavoided cirrhosis and its sequelae occur in the distant futurewhereas the costs of screening and antiviral treatment occurmuch earlier One study30 in France did not discount at all andtwo studies 2036 conducted in the UK used different discountrates for costs and effects The ICERs increased significantly insensitivity analyses when cost and effects were equallydiscounted with 35 annually (eg from 16 514 poundQALY to33 235 poundQALY36)Most studies used a lifelong time horizon for their analyses
which is the most adequate timeframe to use As benefits thatoccur far in the future will not be considered within shortertime horizons estimated cost-effectiveness ratios may be toohigh One study used a 30 year time horizon30 As cirrhosisand its complications develop slowly within 10ndash30 years eventhis time horizon may be too short and benefits may beunderestimatedAll studies included in this review take into account the
natural history of chronic Hepatitis C disease progression andmortality from CHC-related complications Only one studyused the natural history of chronic Hepatitis B diseaseprogression as at that time no information existed regardingHepatitis C progression However it was not always clearwhether slower progression rates were considered for screenedpopulations tending to present histological milder Hepatitis Ccompared to non-screened populations mostly detected bysymptoms Several studies reported that patients with mildCHC and normal ALT levels may have a reduced risk ofprogression to cirrhosis compared to patients with more severehistology or elevated ALT levels751ndash54 Furthermore analysesfor CHC patients co-infected with HIV should assume higherprogression rates to CHC-related liver diseases than analysesin non-co-infected CHC patients5556In addition most studies used age- and gender-specific
mortality rates of the general population for the backgroundmortality for CHC patients However background mortality isoften higher due to co-morbidity from other diseases such asHIV- or HBV-coinfection or in case of IDUs from continua-tion of or relapse to drug abuse Even patients with moderateCHC or cirrhosis that respond to antiviral treatment continue
to have an increased risk of developing hepatocellularcarcinoma which is associated with significant mortalityOverall this review discovered many study limitations and
the need for further systematic research in HCV screeningParticularly health-economic studies in population with lowor average HCV prevalence evaluating HCV screeningcombined with different strategies of monitoring and antiviraltreatment of HCV-positives according to current treatmentstandard are requiredFinally it must be mentioned that due to different
epidemiology health care systems disease managementpractice patterns and treatment costs in different Europeancountries results cannot be generalized and are difficult if notimpossible to be directly transferred from one country toanother Further research should focus on the development ofa Pan-European Hepatitis C screening model that fulfils thequality criteria discussed above and which can be adapted tothe context of the different health care systems and countrieswithin Europe
Conclusion
Although HCV screening fulfils general population screeningcriteria specific well-formulated national programs forHepatitis C screening are lacking in most European countriesBased on current evidence HCV screening and early treatmenthas the potential to improve average life-expectancy butshould focus on populations with elevated HCV prevalence tobe cost-effective Further research is needed to investigate thelong-term health-economic impact of HCV screening whencombined with appropriate monitoring and treatmentstrategies in different European health care systems Furtherassessments should focus on determining optimal targetgroups and settings that yield effective and cost-effectiveHCV screening strategies
Acknowledgements
We thank the members of the PanEuropean Hepatitis C ExpertPanel for providing local information and reviewing the resultsof our study Maria Buti MD Hospital General UniversitarioVall de Hebron Barcelona Spain Florin Caruntu Matei BalsInfectious Disease Institute Bucharest and Carol DavilaMedicine and Pharmacy University Bucharest RomaniaCharles Gore The Hepatitis C Trust London UK Scott DHolmberg MD MPH Epidemiology and Surveillance BranchDivision of Viral Hepatitis Prevention NCHHSTP Centers forDisease Control and Prevention Atlanta GA USA NadinePiorkowsky The European Liver Patients Association (ELPA)Germany Prof William Rosenberg Institute of HepatologyUniversity College London UK However the authors aloneare responsible for the results reported and views expressed inthe paper The authors had complete and independent controlover study design analysis and interpretation of data reportwriting and publication regardless of results
Funding
This project was supported in part by an unrestrictededucational grant from Hoffmann La-Roche Ltd BaselSwitzerland
Conflicts of interest NM has received travel support fromHoffmann La-Roche Ltd to present preliminary results of thestudy to different audiences US has received healthtechnology assessment research grants from the GermanFederal Ministry of Health and the Austrian Academy of
Cost-effectiveness of HCV-screening 251
Sciences and unrestricted research grants from ScheringPlough and Roche
Key points
Although HCV screening fulfils general populationscreening criteria specific well-formulated nationalpublic health programs for hepatitis C screening arelacking in most European countries
According to this review HCV screening with earlytreatment has the potential to improve averagelife-expectancy but should focus on populationswith elevated HCV prevalence to be cost-effectiveAppropriate target groups could be selected based onrisk factor profiles
Appropriate monitoring and treatment strategiesfor detected early disease may improve the cost-effectiveness of HCV screening
In view of the multitude of iatrogenic infectionshowever cost-effectiveness may not be the onlydecision criterion for the implementation of HCVscreening Aspects like fairness might be considered aswell
Further research should focus on the public-healthimpact of HCV screening when combined withappropriate monitoring and treatment strategies andon determining optimal target groups and settings
References
1 Weissing L Roy K Sapinho D et al Surveillance of hepatitis C infection
among injecting drug users in the European Union In Jager J Limburg W
Kretzschmar M et al editors Hepatitis C and injecting drug use
Luxembourg European Monitoring Centre for Drugs and Drug Addiction
2006 91ndash135
2 European Centre for Disease Prevention and Control (ECDC) Annual
epidemiologic report on communicable diseases in Europe 2007 http
wwwecdceuropaeu (date last accessed 28 June 2007)
3 Rantala M van de Laar MJ Surveillance and epidemiology of hepatitis B and
C in Europe ndash a review Euro Surveill 200813 Available online
httpwwweurosurveillanceorg (date last accessed 13 December 2008)
4 Alter H Seeff L Recovery persistence and sequelae in hepatitis C virus
infection a perspective on long-term outcome Semin Liver Dis
20002017ndash35
5 Anonymous EASL international consensus conference on hepatitis C
Paris 26ndash27 February 1999 Consensus statement J Hepatol
199931(Suppl 1)3ndash8
6 Dore GJ Freeman AJ Law M Kaldor JM Is severe liver disease a common
outcome for people with chronic hepatitis C J Gastroenterol Hepatol
200217423ndash30
7 Freeman A Dore G Law M et al Estimating progression to cirrhosis in
chronic hepatitis C virus infection Hepatology 200134809ndash16
8 Freeman AJ Law MG Kaldor JM Dore GJ Predicting progression
to cirrhosis in chronic hepatitis C virus infection J Viral Hepat
200310285ndash93
9 Hopf U Moller B Kuther D et al Long-term follow-up of posttransfusion
and sporadic chronic hepatitis non-A non-B and frequency of circulating
antibodies to hepatitis C virus (HCV) J Hepatol 19901069ndash76
10 Koretz R Abbey H Coleman E Gitnick G Non-A non-B post-transfusion
hepatitis Looking back in the second decade Ann Intern Med
1993119110ndash5
11 Mattsson L Outcome of acute symptomatic non-A non-B hepatitis
a 13-year follow-up study of hepatitis C virus markers Liver
199313274ndash8
12 Tremolada F Casarin C Alberti A et al Long-term follow-up of non-A
non-B (type C) post-transfusion hepatitis J Hepatol 199216273ndash81
13 World Health Organization (WHO) Global surveillance and control of
hepatitis C Report of a WHO consultation organized in collaboration with
the Viral Hepatitis Prevention Board Antwerp Belgium J Viral Hepatitis
1999635ndash47
14 Wilson J Jungner Y Principles and practice of mass screening for disease
Bol Oficina Sanit Panam 196865281ndash393
15 Wilson J The evaluation of the worth of early disease detection J R Coll Gen
Pract 196816(Suppl 2)48ndash57
16 Brady B Siebert U Sroczynski G et al Pegylated interferon combined with
ribavirin for chronic hepatitis C virus infection an economic evaluation
[Technology Report No 82] Ottawa Canadian Agency for Drugs and
Technologies in Health 2007
17 Wright M Grieve R Roberts J Main J Thomas HC on behalf of the UK
Mild Hepatitis C Trial Investigators Health benefits of antiviral therapy for
mild chronic hepatitis C randomised controlled trial and economic
evaluation Health Technol Assess 2006101ndash132
18 Maheshwari A Ray S Thuluvath PJ Acute hepatitis C Lancet
2008372321ndash32
19 Jullien-Depradeux AM Bloch J Le Quellec-Nathan M Abenhaim A
National campaign against hepatitis C in France (1999ndash2002) Acta
Gastroenterol Belg 200265112ndash4
20 Stein K Dalziel K Walker A et al Screening for hepatitis C among injecting
drug users and in genitourinary medicine clinics systematic reviews of
effectiveness modelling study and national survey of current practice
Health Technol Assess 200261ndash122
21 Department of HealthGeneral Health Protection Hepatitis C Action Plan
for England July 2004 Available at wwwdhgovukpublications (date last
accessed 12 November 2006
22 European Liver Patient Association (ELPA) European Parliament demands
EU-wide action on Hepatitis C 2007 httpwwwelpaorg (date last accessed
15 May 2007)
23 European Liver Patient Association (ELPA) Promoting Hepatitis C Screening
in Europe 2007 httpwwwelpaorg (date last accessed 8 May 2008)
24 Shepherd J Brodin HFT Cave CB et al Clinical- and cost-effectiveness of
pegylated interferon alfa in the treatment of chronic hepatitis C a systematic
review and economic evaluation Int J Technol Assess Health Care
20052147ndash54
25 Siebert U Sroczynski G on behalf of the German Hepatitis C Model
(GEHMO) Group and the HTA Expert Panel on Hepatitis C Antiviral
therapy for patients with chronic hepatitis C in Germany Evaluation of
effectiveness and cost-effectiveness of initial combination therapy with
InterferonPeginterferon plus Ribavirin Series of the German Institute for
Medical Documentation and Information commissioned by the Federal
Ministry of Health and Social Security Cologne DIMDI 2003
26 Organisation for Economic Co-operation and Development (OECD) Gross
domestic product purchasing power parities 2006 httpwwwoecdorg
27 German Federal Statistical Office German Consumer Price Index (CPI) 2006
httpwwwdestatisde
28 Population Division of the Department of Economic and Social Affairs of the
United Nations Secretariat World population prospects the 2006 revision and
world urbanization prospects the 2005 revision httpesaunorgunpp
29 Leal P Stein K Rosenberg W What is the cost utility of screening for
hepatitis C virus (HCV) in intravenous drug users J Med Screen
19996124ndash31
30 Jusot JF Colin C Cost-effectiveness analysis of strategies for hepatitis C
screening in French blood recipients Eur J Public Health 200111373ndash9
31 Singer ME Younossi ZM Cost effectiveness of screening for hepatitis C virus
in asymptomatic average-risk adults Am J Med 2001111614ndash21
32 Loubiere S Rotily M Moatti JP Prevention could be less cost-effective than
cure the case of hepatitis C screening policies in France Int J Technol Assess
Health Care 200319632ndash45
33 Stein K Dalziel K Walker A et al Screening for hepatitis C in genito-urinary
medicine clinics a cost utility analysis J Hepatol 200339814ndash25
34 Stein K Dalziel K Walker A et al Screening for Hepatitis C in injecting drug
users a cost utility analysis J Public Health 20042661ndash71
252 European Journal of Public Health
35 Plunkett BA Grobman WA Routine hepatitis C virus screening in
pregnancy a cost-effectiveness analysis Am J Obstet Gynecol
20051921153ndash61
36 Castelnuovo E Thompson-Coon J Pitt M et al The cost-effectiveness of
testing for hepatitis C in former injecting drug users Health Technol Assess
200610 iiindashiv ixndashxii 1ndash93
37 Thompson Coon J Castelnuovo E Pitt M et al Case finding for hepatitis C
in primary care a cost utility analysis Fam Pract 200623393ndash406
38 Sherman M Shafran S Burak K et al Management of chronic hepatitis C
consensus guidelines Can J Gastroenterol 200721(Suppl C)25Cndash34C
39 NIH Consensus Statement National institutes of health consensus devel-
opment conference management of Hepatitis C 2002 - June 10ndash12 2002
Hepatology 200236(5 Suppl 1)S3ndash20
40 Zeuzem S Standard treatment of acute and chronic hepatitis C
Z Gastroenterol 200442714ndash9
41 Siebert U Sroczynski G Hillemanns P et al The German cervical cancer
screening model development and validation of a decision-analytic model
for cervical cancer screening in Germany Eur J Public Health
200616185ndash92
42 Sanders G Bayoumi A Sundaram V et al Cost-effectiveness of screening for
HIV in the era of highly active antiretroviral therapy N Engl J Med
2005352570ndash85
43 Payne N Chilcott J McGoogan E Liquid-based cytology in cervical
screening a rapid and systematic review Health Technol Assess 200041ndash73
44 Siebert U Muth C Sroczynski G et al Liquid-based preparation and
computer-assisted examination of cervical smears in cervical cancer screening
Clinical effectiveness economic evaluation and systematic decision analysis
Series of the German Institute for Medical Documentation and Information
commissioned by the Federal Ministry of Health and Social Security St
Augustin Asgard 2004
45 McCrory DC Matchar DB Evaluation of cervical cytology - systematic
review HTA Report Agency for Health Care Research and Quality (AHRQ)
Report No 5 1999
46 Tengs T Adams M Pliskin J et al Five-hundred life-saving interventions
and their cost-effectiveness Risk Anal 199515369ndash90
47 Siebert U When should decision-analytic modeling be used in the
economic evaluation of health care [Editorial] Eur J Health Econ
20034143ndash50
48 Shamir R Hernell O Leshno M Cost-effectiveness analysis of
screening for celiac disease in adult population Med Decis Making
200626282ndash93
49 Hayashino Y Shimbo T Tsujii S et al Cost-effectiveness of coronary artery
disease screening in asymptomatic patients with type 2 diabetes and other
atherogenic risk factors in Japan factors influencing on international
application of evidence-based guidelines Int J Cardiol 200711888ndash96
50 Wong JB Koff RS Watchful waiting with periodic liver biopsy versus
immediate empirical therapy for histologically mild chronic hepatitis C A
cost-effectiveness analysis Ann Intern Med 2000133665ndash75
51 Alberti A Morsica G Chemello L et al Hepatitis C viremia and liver
disease in symptom-free individuals with anti-HCV Lancet
1992340697ndash8
52 Alter H Conry-Cantilena C Melpolder J et al Hepatitis C in asymptomatic
blood donors Hepatology 199726(3 Suppl 1)29Sndash33S
53 Marcellin P Levy S Erlinger S Therapy of hepatitis C patients with normal
aminotransferase levels Hepatology 199726(3 Suppl 1)133Sndash6S
54 Mathurin P Moussalli J Cadranel J et al Slow progression rate of fibrosis in
hepatitis C virus patients with persistently normal alanine transaminase
activity Hepatology 199827868ndash72
55 Graham CS Baden LR Yu E et al Influence of human immunodeficiency
virus infection on the course of hepatitis C virus infection a meta-analysis
Clin Infect Dis 200133562ndash9
56 Soto B Sanchez-Quijano A Rodrigo L et al Human immunodeficiency
virus infection modifies the natural history of chronic parenterally-acquired
hepatitis C with an unusually rapid progression to cirrhosis J Hepatol
1997261ndash5
Received 14 September 2008 accepted 22 December 2008
Cost-effectiveness of HCV-screening 253
would reduce adverse effects harms and antiviral treatmentcosts and improve the cost-effectiveness of HCV screening dueto better clinical and economic outcomes Fourth eligibilityof patients for and adherence to antiviral treatment shouldbe considered In particular any HCV-screening modelshould consider a lsquowait and seersquo strategy in the screeningarm because not all patients necessarily should or want to betreated immediately after HCV detection50 HCV screeningand watchful monitoring HCV-infected patients may be moreeffective and cost-effective than screening with immediatetreatment of all HCV-infected patients since a fraction ofHCV-infected patients may not develop fibrosis or cirrhosisduring their lifetime This is particularly important for theelderlyThe age at which HCV-infected patients are identified and
treated is a very important modelling factor as well Moststudies used an average age of 40 years for the evaluatedpopulation which may be adequate for patients with CHCwhich already developed symptoms However HCV screeningmay detect HCV-infected individuals earlier at significantlyyounger age In addition certain HCV-infected populationsat risk for advanced liver disease such as intravenous druguser or ethnic minority groups who have acquired HCViatrogenically in early childhood have a significantly youngeraverage age Thus in these cases benefits from early detectionand treatment may be underestimatedDiscounting costs and effects is important and affects ICERs
since the clinical and economic benefits of screening due toavoided cirrhosis and its sequelae occur in the distant futurewhereas the costs of screening and antiviral treatment occurmuch earlier One study30 in France did not discount at all andtwo studies 2036 conducted in the UK used different discountrates for costs and effects The ICERs increased significantly insensitivity analyses when cost and effects were equallydiscounted with 35 annually (eg from 16 514 poundQALY to33 235 poundQALY36)Most studies used a lifelong time horizon for their analyses
which is the most adequate timeframe to use As benefits thatoccur far in the future will not be considered within shortertime horizons estimated cost-effectiveness ratios may be toohigh One study used a 30 year time horizon30 As cirrhosisand its complications develop slowly within 10ndash30 years eventhis time horizon may be too short and benefits may beunderestimatedAll studies included in this review take into account the
natural history of chronic Hepatitis C disease progression andmortality from CHC-related complications Only one studyused the natural history of chronic Hepatitis B diseaseprogression as at that time no information existed regardingHepatitis C progression However it was not always clearwhether slower progression rates were considered for screenedpopulations tending to present histological milder Hepatitis Ccompared to non-screened populations mostly detected bysymptoms Several studies reported that patients with mildCHC and normal ALT levels may have a reduced risk ofprogression to cirrhosis compared to patients with more severehistology or elevated ALT levels751ndash54 Furthermore analysesfor CHC patients co-infected with HIV should assume higherprogression rates to CHC-related liver diseases than analysesin non-co-infected CHC patients5556In addition most studies used age- and gender-specific
mortality rates of the general population for the backgroundmortality for CHC patients However background mortality isoften higher due to co-morbidity from other diseases such asHIV- or HBV-coinfection or in case of IDUs from continua-tion of or relapse to drug abuse Even patients with moderateCHC or cirrhosis that respond to antiviral treatment continue
to have an increased risk of developing hepatocellularcarcinoma which is associated with significant mortalityOverall this review discovered many study limitations and
the need for further systematic research in HCV screeningParticularly health-economic studies in population with lowor average HCV prevalence evaluating HCV screeningcombined with different strategies of monitoring and antiviraltreatment of HCV-positives according to current treatmentstandard are requiredFinally it must be mentioned that due to different
epidemiology health care systems disease managementpractice patterns and treatment costs in different Europeancountries results cannot be generalized and are difficult if notimpossible to be directly transferred from one country toanother Further research should focus on the development ofa Pan-European Hepatitis C screening model that fulfils thequality criteria discussed above and which can be adapted tothe context of the different health care systems and countrieswithin Europe
Conclusion
Although HCV screening fulfils general population screeningcriteria specific well-formulated national programs forHepatitis C screening are lacking in most European countriesBased on current evidence HCV screening and early treatmenthas the potential to improve average life-expectancy butshould focus on populations with elevated HCV prevalence tobe cost-effective Further research is needed to investigate thelong-term health-economic impact of HCV screening whencombined with appropriate monitoring and treatmentstrategies in different European health care systems Furtherassessments should focus on determining optimal targetgroups and settings that yield effective and cost-effectiveHCV screening strategies
Acknowledgements
We thank the members of the PanEuropean Hepatitis C ExpertPanel for providing local information and reviewing the resultsof our study Maria Buti MD Hospital General UniversitarioVall de Hebron Barcelona Spain Florin Caruntu Matei BalsInfectious Disease Institute Bucharest and Carol DavilaMedicine and Pharmacy University Bucharest RomaniaCharles Gore The Hepatitis C Trust London UK Scott DHolmberg MD MPH Epidemiology and Surveillance BranchDivision of Viral Hepatitis Prevention NCHHSTP Centers forDisease Control and Prevention Atlanta GA USA NadinePiorkowsky The European Liver Patients Association (ELPA)Germany Prof William Rosenberg Institute of HepatologyUniversity College London UK However the authors aloneare responsible for the results reported and views expressed inthe paper The authors had complete and independent controlover study design analysis and interpretation of data reportwriting and publication regardless of results
Funding
This project was supported in part by an unrestrictededucational grant from Hoffmann La-Roche Ltd BaselSwitzerland
Conflicts of interest NM has received travel support fromHoffmann La-Roche Ltd to present preliminary results of thestudy to different audiences US has received healthtechnology assessment research grants from the GermanFederal Ministry of Health and the Austrian Academy of
Cost-effectiveness of HCV-screening 251
Sciences and unrestricted research grants from ScheringPlough and Roche
Key points
Although HCV screening fulfils general populationscreening criteria specific well-formulated nationalpublic health programs for hepatitis C screening arelacking in most European countries
According to this review HCV screening with earlytreatment has the potential to improve averagelife-expectancy but should focus on populationswith elevated HCV prevalence to be cost-effectiveAppropriate target groups could be selected based onrisk factor profiles
Appropriate monitoring and treatment strategiesfor detected early disease may improve the cost-effectiveness of HCV screening
In view of the multitude of iatrogenic infectionshowever cost-effectiveness may not be the onlydecision criterion for the implementation of HCVscreening Aspects like fairness might be considered aswell
Further research should focus on the public-healthimpact of HCV screening when combined withappropriate monitoring and treatment strategies andon determining optimal target groups and settings
References
1 Weissing L Roy K Sapinho D et al Surveillance of hepatitis C infection
among injecting drug users in the European Union In Jager J Limburg W
Kretzschmar M et al editors Hepatitis C and injecting drug use
Luxembourg European Monitoring Centre for Drugs and Drug Addiction
2006 91ndash135
2 European Centre for Disease Prevention and Control (ECDC) Annual
epidemiologic report on communicable diseases in Europe 2007 http
wwwecdceuropaeu (date last accessed 28 June 2007)
3 Rantala M van de Laar MJ Surveillance and epidemiology of hepatitis B and
C in Europe ndash a review Euro Surveill 200813 Available online
httpwwweurosurveillanceorg (date last accessed 13 December 2008)
4 Alter H Seeff L Recovery persistence and sequelae in hepatitis C virus
infection a perspective on long-term outcome Semin Liver Dis
20002017ndash35
5 Anonymous EASL international consensus conference on hepatitis C
Paris 26ndash27 February 1999 Consensus statement J Hepatol
199931(Suppl 1)3ndash8
6 Dore GJ Freeman AJ Law M Kaldor JM Is severe liver disease a common
outcome for people with chronic hepatitis C J Gastroenterol Hepatol
200217423ndash30
7 Freeman A Dore G Law M et al Estimating progression to cirrhosis in
chronic hepatitis C virus infection Hepatology 200134809ndash16
8 Freeman AJ Law MG Kaldor JM Dore GJ Predicting progression
to cirrhosis in chronic hepatitis C virus infection J Viral Hepat
200310285ndash93
9 Hopf U Moller B Kuther D et al Long-term follow-up of posttransfusion
and sporadic chronic hepatitis non-A non-B and frequency of circulating
antibodies to hepatitis C virus (HCV) J Hepatol 19901069ndash76
10 Koretz R Abbey H Coleman E Gitnick G Non-A non-B post-transfusion
hepatitis Looking back in the second decade Ann Intern Med
1993119110ndash5
11 Mattsson L Outcome of acute symptomatic non-A non-B hepatitis
a 13-year follow-up study of hepatitis C virus markers Liver
199313274ndash8
12 Tremolada F Casarin C Alberti A et al Long-term follow-up of non-A
non-B (type C) post-transfusion hepatitis J Hepatol 199216273ndash81
13 World Health Organization (WHO) Global surveillance and control of
hepatitis C Report of a WHO consultation organized in collaboration with
the Viral Hepatitis Prevention Board Antwerp Belgium J Viral Hepatitis
1999635ndash47
14 Wilson J Jungner Y Principles and practice of mass screening for disease
Bol Oficina Sanit Panam 196865281ndash393
15 Wilson J The evaluation of the worth of early disease detection J R Coll Gen
Pract 196816(Suppl 2)48ndash57
16 Brady B Siebert U Sroczynski G et al Pegylated interferon combined with
ribavirin for chronic hepatitis C virus infection an economic evaluation
[Technology Report No 82] Ottawa Canadian Agency for Drugs and
Technologies in Health 2007
17 Wright M Grieve R Roberts J Main J Thomas HC on behalf of the UK
Mild Hepatitis C Trial Investigators Health benefits of antiviral therapy for
mild chronic hepatitis C randomised controlled trial and economic
evaluation Health Technol Assess 2006101ndash132
18 Maheshwari A Ray S Thuluvath PJ Acute hepatitis C Lancet
2008372321ndash32
19 Jullien-Depradeux AM Bloch J Le Quellec-Nathan M Abenhaim A
National campaign against hepatitis C in France (1999ndash2002) Acta
Gastroenterol Belg 200265112ndash4
20 Stein K Dalziel K Walker A et al Screening for hepatitis C among injecting
drug users and in genitourinary medicine clinics systematic reviews of
effectiveness modelling study and national survey of current practice
Health Technol Assess 200261ndash122
21 Department of HealthGeneral Health Protection Hepatitis C Action Plan
for England July 2004 Available at wwwdhgovukpublications (date last
accessed 12 November 2006
22 European Liver Patient Association (ELPA) European Parliament demands
EU-wide action on Hepatitis C 2007 httpwwwelpaorg (date last accessed
15 May 2007)
23 European Liver Patient Association (ELPA) Promoting Hepatitis C Screening
in Europe 2007 httpwwwelpaorg (date last accessed 8 May 2008)
24 Shepherd J Brodin HFT Cave CB et al Clinical- and cost-effectiveness of
pegylated interferon alfa in the treatment of chronic hepatitis C a systematic
review and economic evaluation Int J Technol Assess Health Care
20052147ndash54
25 Siebert U Sroczynski G on behalf of the German Hepatitis C Model
(GEHMO) Group and the HTA Expert Panel on Hepatitis C Antiviral
therapy for patients with chronic hepatitis C in Germany Evaluation of
effectiveness and cost-effectiveness of initial combination therapy with
InterferonPeginterferon plus Ribavirin Series of the German Institute for
Medical Documentation and Information commissioned by the Federal
Ministry of Health and Social Security Cologne DIMDI 2003
26 Organisation for Economic Co-operation and Development (OECD) Gross
domestic product purchasing power parities 2006 httpwwwoecdorg
27 German Federal Statistical Office German Consumer Price Index (CPI) 2006
httpwwwdestatisde
28 Population Division of the Department of Economic and Social Affairs of the
United Nations Secretariat World population prospects the 2006 revision and
world urbanization prospects the 2005 revision httpesaunorgunpp
29 Leal P Stein K Rosenberg W What is the cost utility of screening for
hepatitis C virus (HCV) in intravenous drug users J Med Screen
19996124ndash31
30 Jusot JF Colin C Cost-effectiveness analysis of strategies for hepatitis C
screening in French blood recipients Eur J Public Health 200111373ndash9
31 Singer ME Younossi ZM Cost effectiveness of screening for hepatitis C virus
in asymptomatic average-risk adults Am J Med 2001111614ndash21
32 Loubiere S Rotily M Moatti JP Prevention could be less cost-effective than
cure the case of hepatitis C screening policies in France Int J Technol Assess
Health Care 200319632ndash45
33 Stein K Dalziel K Walker A et al Screening for hepatitis C in genito-urinary
medicine clinics a cost utility analysis J Hepatol 200339814ndash25
34 Stein K Dalziel K Walker A et al Screening for Hepatitis C in injecting drug
users a cost utility analysis J Public Health 20042661ndash71
252 European Journal of Public Health
35 Plunkett BA Grobman WA Routine hepatitis C virus screening in
pregnancy a cost-effectiveness analysis Am J Obstet Gynecol
20051921153ndash61
36 Castelnuovo E Thompson-Coon J Pitt M et al The cost-effectiveness of
testing for hepatitis C in former injecting drug users Health Technol Assess
200610 iiindashiv ixndashxii 1ndash93
37 Thompson Coon J Castelnuovo E Pitt M et al Case finding for hepatitis C
in primary care a cost utility analysis Fam Pract 200623393ndash406
38 Sherman M Shafran S Burak K et al Management of chronic hepatitis C
consensus guidelines Can J Gastroenterol 200721(Suppl C)25Cndash34C
39 NIH Consensus Statement National institutes of health consensus devel-
opment conference management of Hepatitis C 2002 - June 10ndash12 2002
Hepatology 200236(5 Suppl 1)S3ndash20
40 Zeuzem S Standard treatment of acute and chronic hepatitis C
Z Gastroenterol 200442714ndash9
41 Siebert U Sroczynski G Hillemanns P et al The German cervical cancer
screening model development and validation of a decision-analytic model
for cervical cancer screening in Germany Eur J Public Health
200616185ndash92
42 Sanders G Bayoumi A Sundaram V et al Cost-effectiveness of screening for
HIV in the era of highly active antiretroviral therapy N Engl J Med
2005352570ndash85
43 Payne N Chilcott J McGoogan E Liquid-based cytology in cervical
screening a rapid and systematic review Health Technol Assess 200041ndash73
44 Siebert U Muth C Sroczynski G et al Liquid-based preparation and
computer-assisted examination of cervical smears in cervical cancer screening
Clinical effectiveness economic evaluation and systematic decision analysis
Series of the German Institute for Medical Documentation and Information
commissioned by the Federal Ministry of Health and Social Security St
Augustin Asgard 2004
45 McCrory DC Matchar DB Evaluation of cervical cytology - systematic
review HTA Report Agency for Health Care Research and Quality (AHRQ)
Report No 5 1999
46 Tengs T Adams M Pliskin J et al Five-hundred life-saving interventions
and their cost-effectiveness Risk Anal 199515369ndash90
47 Siebert U When should decision-analytic modeling be used in the
economic evaluation of health care [Editorial] Eur J Health Econ
20034143ndash50
48 Shamir R Hernell O Leshno M Cost-effectiveness analysis of
screening for celiac disease in adult population Med Decis Making
200626282ndash93
49 Hayashino Y Shimbo T Tsujii S et al Cost-effectiveness of coronary artery
disease screening in asymptomatic patients with type 2 diabetes and other
atherogenic risk factors in Japan factors influencing on international
application of evidence-based guidelines Int J Cardiol 200711888ndash96
50 Wong JB Koff RS Watchful waiting with periodic liver biopsy versus
immediate empirical therapy for histologically mild chronic hepatitis C A
cost-effectiveness analysis Ann Intern Med 2000133665ndash75
51 Alberti A Morsica G Chemello L et al Hepatitis C viremia and liver
disease in symptom-free individuals with anti-HCV Lancet
1992340697ndash8
52 Alter H Conry-Cantilena C Melpolder J et al Hepatitis C in asymptomatic
blood donors Hepatology 199726(3 Suppl 1)29Sndash33S
53 Marcellin P Levy S Erlinger S Therapy of hepatitis C patients with normal
aminotransferase levels Hepatology 199726(3 Suppl 1)133Sndash6S
54 Mathurin P Moussalli J Cadranel J et al Slow progression rate of fibrosis in
hepatitis C virus patients with persistently normal alanine transaminase
activity Hepatology 199827868ndash72
55 Graham CS Baden LR Yu E et al Influence of human immunodeficiency
virus infection on the course of hepatitis C virus infection a meta-analysis
Clin Infect Dis 200133562ndash9
56 Soto B Sanchez-Quijano A Rodrigo L et al Human immunodeficiency
virus infection modifies the natural history of chronic parenterally-acquired
hepatitis C with an unusually rapid progression to cirrhosis J Hepatol
1997261ndash5
Received 14 September 2008 accepted 22 December 2008
Cost-effectiveness of HCV-screening 253
Sciences and unrestricted research grants from ScheringPlough and Roche
Key points
Although HCV screening fulfils general populationscreening criteria specific well-formulated nationalpublic health programs for hepatitis C screening arelacking in most European countries
According to this review HCV screening with earlytreatment has the potential to improve averagelife-expectancy but should focus on populationswith elevated HCV prevalence to be cost-effectiveAppropriate target groups could be selected based onrisk factor profiles
Appropriate monitoring and treatment strategiesfor detected early disease may improve the cost-effectiveness of HCV screening
In view of the multitude of iatrogenic infectionshowever cost-effectiveness may not be the onlydecision criterion for the implementation of HCVscreening Aspects like fairness might be considered aswell
Further research should focus on the public-healthimpact of HCV screening when combined withappropriate monitoring and treatment strategies andon determining optimal target groups and settings
References
1 Weissing L Roy K Sapinho D et al Surveillance of hepatitis C infection
among injecting drug users in the European Union In Jager J Limburg W
Kretzschmar M et al editors Hepatitis C and injecting drug use
Luxembourg European Monitoring Centre for Drugs and Drug Addiction
2006 91ndash135
2 European Centre for Disease Prevention and Control (ECDC) Annual
epidemiologic report on communicable diseases in Europe 2007 http
wwwecdceuropaeu (date last accessed 28 June 2007)
3 Rantala M van de Laar MJ Surveillance and epidemiology of hepatitis B and
C in Europe ndash a review Euro Surveill 200813 Available online
httpwwweurosurveillanceorg (date last accessed 13 December 2008)
4 Alter H Seeff L Recovery persistence and sequelae in hepatitis C virus
infection a perspective on long-term outcome Semin Liver Dis
20002017ndash35
5 Anonymous EASL international consensus conference on hepatitis C
Paris 26ndash27 February 1999 Consensus statement J Hepatol
199931(Suppl 1)3ndash8
6 Dore GJ Freeman AJ Law M Kaldor JM Is severe liver disease a common
outcome for people with chronic hepatitis C J Gastroenterol Hepatol
200217423ndash30
7 Freeman A Dore G Law M et al Estimating progression to cirrhosis in
chronic hepatitis C virus infection Hepatology 200134809ndash16
8 Freeman AJ Law MG Kaldor JM Dore GJ Predicting progression
to cirrhosis in chronic hepatitis C virus infection J Viral Hepat
200310285ndash93
9 Hopf U Moller B Kuther D et al Long-term follow-up of posttransfusion
and sporadic chronic hepatitis non-A non-B and frequency of circulating
antibodies to hepatitis C virus (HCV) J Hepatol 19901069ndash76
10 Koretz R Abbey H Coleman E Gitnick G Non-A non-B post-transfusion
hepatitis Looking back in the second decade Ann Intern Med
1993119110ndash5
11 Mattsson L Outcome of acute symptomatic non-A non-B hepatitis
a 13-year follow-up study of hepatitis C virus markers Liver
199313274ndash8
12 Tremolada F Casarin C Alberti A et al Long-term follow-up of non-A
non-B (type C) post-transfusion hepatitis J Hepatol 199216273ndash81
13 World Health Organization (WHO) Global surveillance and control of
hepatitis C Report of a WHO consultation organized in collaboration with
the Viral Hepatitis Prevention Board Antwerp Belgium J Viral Hepatitis
1999635ndash47
14 Wilson J Jungner Y Principles and practice of mass screening for disease
Bol Oficina Sanit Panam 196865281ndash393
15 Wilson J The evaluation of the worth of early disease detection J R Coll Gen
Pract 196816(Suppl 2)48ndash57
16 Brady B Siebert U Sroczynski G et al Pegylated interferon combined with
ribavirin for chronic hepatitis C virus infection an economic evaluation
[Technology Report No 82] Ottawa Canadian Agency for Drugs and
Technologies in Health 2007
17 Wright M Grieve R Roberts J Main J Thomas HC on behalf of the UK
Mild Hepatitis C Trial Investigators Health benefits of antiviral therapy for
mild chronic hepatitis C randomised controlled trial and economic
evaluation Health Technol Assess 2006101ndash132
18 Maheshwari A Ray S Thuluvath PJ Acute hepatitis C Lancet
2008372321ndash32
19 Jullien-Depradeux AM Bloch J Le Quellec-Nathan M Abenhaim A
National campaign against hepatitis C in France (1999ndash2002) Acta
Gastroenterol Belg 200265112ndash4
20 Stein K Dalziel K Walker A et al Screening for hepatitis C among injecting
drug users and in genitourinary medicine clinics systematic reviews of
effectiveness modelling study and national survey of current practice
Health Technol Assess 200261ndash122
21 Department of HealthGeneral Health Protection Hepatitis C Action Plan
for England July 2004 Available at wwwdhgovukpublications (date last
accessed 12 November 2006
22 European Liver Patient Association (ELPA) European Parliament demands
EU-wide action on Hepatitis C 2007 httpwwwelpaorg (date last accessed
15 May 2007)
23 European Liver Patient Association (ELPA) Promoting Hepatitis C Screening
in Europe 2007 httpwwwelpaorg (date last accessed 8 May 2008)
24 Shepherd J Brodin HFT Cave CB et al Clinical- and cost-effectiveness of
pegylated interferon alfa in the treatment of chronic hepatitis C a systematic
review and economic evaluation Int J Technol Assess Health Care
20052147ndash54
25 Siebert U Sroczynski G on behalf of the German Hepatitis C Model
(GEHMO) Group and the HTA Expert Panel on Hepatitis C Antiviral
therapy for patients with chronic hepatitis C in Germany Evaluation of
effectiveness and cost-effectiveness of initial combination therapy with
InterferonPeginterferon plus Ribavirin Series of the German Institute for
Medical Documentation and Information commissioned by the Federal
Ministry of Health and Social Security Cologne DIMDI 2003
26 Organisation for Economic Co-operation and Development (OECD) Gross
domestic product purchasing power parities 2006 httpwwwoecdorg
27 German Federal Statistical Office German Consumer Price Index (CPI) 2006
httpwwwdestatisde
28 Population Division of the Department of Economic and Social Affairs of the
United Nations Secretariat World population prospects the 2006 revision and
world urbanization prospects the 2005 revision httpesaunorgunpp
29 Leal P Stein K Rosenberg W What is the cost utility of screening for
hepatitis C virus (HCV) in intravenous drug users J Med Screen
19996124ndash31
30 Jusot JF Colin C Cost-effectiveness analysis of strategies for hepatitis C
screening in French blood recipients Eur J Public Health 200111373ndash9
31 Singer ME Younossi ZM Cost effectiveness of screening for hepatitis C virus
in asymptomatic average-risk adults Am J Med 2001111614ndash21
32 Loubiere S Rotily M Moatti JP Prevention could be less cost-effective than
cure the case of hepatitis C screening policies in France Int J Technol Assess
Health Care 200319632ndash45
33 Stein K Dalziel K Walker A et al Screening for hepatitis C in genito-urinary
medicine clinics a cost utility analysis J Hepatol 200339814ndash25
34 Stein K Dalziel K Walker A et al Screening for Hepatitis C in injecting drug
users a cost utility analysis J Public Health 20042661ndash71
252 European Journal of Public Health
35 Plunkett BA Grobman WA Routine hepatitis C virus screening in
pregnancy a cost-effectiveness analysis Am J Obstet Gynecol
20051921153ndash61
36 Castelnuovo E Thompson-Coon J Pitt M et al The cost-effectiveness of
testing for hepatitis C in former injecting drug users Health Technol Assess
200610 iiindashiv ixndashxii 1ndash93
37 Thompson Coon J Castelnuovo E Pitt M et al Case finding for hepatitis C
in primary care a cost utility analysis Fam Pract 200623393ndash406
38 Sherman M Shafran S Burak K et al Management of chronic hepatitis C
consensus guidelines Can J Gastroenterol 200721(Suppl C)25Cndash34C
39 NIH Consensus Statement National institutes of health consensus devel-
opment conference management of Hepatitis C 2002 - June 10ndash12 2002
Hepatology 200236(5 Suppl 1)S3ndash20
40 Zeuzem S Standard treatment of acute and chronic hepatitis C
Z Gastroenterol 200442714ndash9
41 Siebert U Sroczynski G Hillemanns P et al The German cervical cancer
screening model development and validation of a decision-analytic model
for cervical cancer screening in Germany Eur J Public Health
200616185ndash92
42 Sanders G Bayoumi A Sundaram V et al Cost-effectiveness of screening for
HIV in the era of highly active antiretroviral therapy N Engl J Med
2005352570ndash85
43 Payne N Chilcott J McGoogan E Liquid-based cytology in cervical
screening a rapid and systematic review Health Technol Assess 200041ndash73
44 Siebert U Muth C Sroczynski G et al Liquid-based preparation and
computer-assisted examination of cervical smears in cervical cancer screening
Clinical effectiveness economic evaluation and systematic decision analysis
Series of the German Institute for Medical Documentation and Information
commissioned by the Federal Ministry of Health and Social Security St
Augustin Asgard 2004
45 McCrory DC Matchar DB Evaluation of cervical cytology - systematic
review HTA Report Agency for Health Care Research and Quality (AHRQ)
Report No 5 1999
46 Tengs T Adams M Pliskin J et al Five-hundred life-saving interventions
and their cost-effectiveness Risk Anal 199515369ndash90
47 Siebert U When should decision-analytic modeling be used in the
economic evaluation of health care [Editorial] Eur J Health Econ
20034143ndash50
48 Shamir R Hernell O Leshno M Cost-effectiveness analysis of
screening for celiac disease in adult population Med Decis Making
200626282ndash93
49 Hayashino Y Shimbo T Tsujii S et al Cost-effectiveness of coronary artery
disease screening in asymptomatic patients with type 2 diabetes and other
atherogenic risk factors in Japan factors influencing on international
application of evidence-based guidelines Int J Cardiol 200711888ndash96
50 Wong JB Koff RS Watchful waiting with periodic liver biopsy versus
immediate empirical therapy for histologically mild chronic hepatitis C A
cost-effectiveness analysis Ann Intern Med 2000133665ndash75
51 Alberti A Morsica G Chemello L et al Hepatitis C viremia and liver
disease in symptom-free individuals with anti-HCV Lancet
1992340697ndash8
52 Alter H Conry-Cantilena C Melpolder J et al Hepatitis C in asymptomatic
blood donors Hepatology 199726(3 Suppl 1)29Sndash33S
53 Marcellin P Levy S Erlinger S Therapy of hepatitis C patients with normal
aminotransferase levels Hepatology 199726(3 Suppl 1)133Sndash6S
54 Mathurin P Moussalli J Cadranel J et al Slow progression rate of fibrosis in
hepatitis C virus patients with persistently normal alanine transaminase
activity Hepatology 199827868ndash72
55 Graham CS Baden LR Yu E et al Influence of human immunodeficiency
virus infection on the course of hepatitis C virus infection a meta-analysis
Clin Infect Dis 200133562ndash9
56 Soto B Sanchez-Quijano A Rodrigo L et al Human immunodeficiency
virus infection modifies the natural history of chronic parenterally-acquired
hepatitis C with an unusually rapid progression to cirrhosis J Hepatol
1997261ndash5
Received 14 September 2008 accepted 22 December 2008
Cost-effectiveness of HCV-screening 253
35 Plunkett BA Grobman WA Routine hepatitis C virus screening in
pregnancy a cost-effectiveness analysis Am J Obstet Gynecol
20051921153ndash61
36 Castelnuovo E Thompson-Coon J Pitt M et al The cost-effectiveness of
testing for hepatitis C in former injecting drug users Health Technol Assess
200610 iiindashiv ixndashxii 1ndash93
37 Thompson Coon J Castelnuovo E Pitt M et al Case finding for hepatitis C
in primary care a cost utility analysis Fam Pract 200623393ndash406
38 Sherman M Shafran S Burak K et al Management of chronic hepatitis C
consensus guidelines Can J Gastroenterol 200721(Suppl C)25Cndash34C
39 NIH Consensus Statement National institutes of health consensus devel-
opment conference management of Hepatitis C 2002 - June 10ndash12 2002
Hepatology 200236(5 Suppl 1)S3ndash20
40 Zeuzem S Standard treatment of acute and chronic hepatitis C
Z Gastroenterol 200442714ndash9
41 Siebert U Sroczynski G Hillemanns P et al The German cervical cancer
screening model development and validation of a decision-analytic model
for cervical cancer screening in Germany Eur J Public Health
200616185ndash92
42 Sanders G Bayoumi A Sundaram V et al Cost-effectiveness of screening for
HIV in the era of highly active antiretroviral therapy N Engl J Med
2005352570ndash85
43 Payne N Chilcott J McGoogan E Liquid-based cytology in cervical
screening a rapid and systematic review Health Technol Assess 200041ndash73
44 Siebert U Muth C Sroczynski G et al Liquid-based preparation and
computer-assisted examination of cervical smears in cervical cancer screening
Clinical effectiveness economic evaluation and systematic decision analysis
Series of the German Institute for Medical Documentation and Information
commissioned by the Federal Ministry of Health and Social Security St
Augustin Asgard 2004
45 McCrory DC Matchar DB Evaluation of cervical cytology - systematic
review HTA Report Agency for Health Care Research and Quality (AHRQ)
Report No 5 1999
46 Tengs T Adams M Pliskin J et al Five-hundred life-saving interventions
and their cost-effectiveness Risk Anal 199515369ndash90
47 Siebert U When should decision-analytic modeling be used in the
economic evaluation of health care [Editorial] Eur J Health Econ
20034143ndash50
48 Shamir R Hernell O Leshno M Cost-effectiveness analysis of
screening for celiac disease in adult population Med Decis Making
200626282ndash93
49 Hayashino Y Shimbo T Tsujii S et al Cost-effectiveness of coronary artery
disease screening in asymptomatic patients with type 2 diabetes and other
atherogenic risk factors in Japan factors influencing on international
application of evidence-based guidelines Int J Cardiol 200711888ndash96
50 Wong JB Koff RS Watchful waiting with periodic liver biopsy versus
immediate empirical therapy for histologically mild chronic hepatitis C A
cost-effectiveness analysis Ann Intern Med 2000133665ndash75
51 Alberti A Morsica G Chemello L et al Hepatitis C viremia and liver
disease in symptom-free individuals with anti-HCV Lancet
1992340697ndash8
52 Alter H Conry-Cantilena C Melpolder J et al Hepatitis C in asymptomatic
blood donors Hepatology 199726(3 Suppl 1)29Sndash33S
53 Marcellin P Levy S Erlinger S Therapy of hepatitis C patients with normal
aminotransferase levels Hepatology 199726(3 Suppl 1)133Sndash6S
54 Mathurin P Moussalli J Cadranel J et al Slow progression rate of fibrosis in
hepatitis C virus patients with persistently normal alanine transaminase
activity Hepatology 199827868ndash72
55 Graham CS Baden LR Yu E et al Influence of human immunodeficiency
virus infection on the course of hepatitis C virus infection a meta-analysis
Clin Infect Dis 200133562ndash9
56 Soto B Sanchez-Quijano A Rodrigo L et al Human immunodeficiency
virus infection modifies the natural history of chronic parenterally-acquired
hepatitis C with an unusually rapid progression to cirrhosis J Hepatol
1997261ndash5
Received 14 September 2008 accepted 22 December 2008
Cost-effectiveness of HCV-screening 253