embase: using emtree to enhance your searching - 27 march 2013
DESCRIPTION
In this webinar, Ian Crowlesmith reviewed the following: - Emtree update policy, including backposting - Recent enrichments in medical device terminology - Optimizing retrieval using EmtreeTRANSCRIPT
Using the Emtree thesaurus to enhance
your searching
Your host: Ann-Marie Roche Your presenter: Ian Crowlesmith
Welcome to our Embase webinar!
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for all your questions
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Need to know...
Agenda as announced1. Review Emtree update policy, including backposting
2. Recent enrichments in medical device terminology
3. Optimizing retrieval using Emtree
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Using the Emtree thesaurus to enhance your searching
Today’s webinar(including all announced topics above)
1. What you need to know about Emtree
2. How to search Emtree in Embase.com
3. Using Emtree to get the best out of your Embase search
4. Q&A (including opportunity for live demo)
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Orthopedics/Spine
Sub-Segments Products by sub-segment1
Dental
Cardiovascular / Implantable
Biodevice / Diagnostics
Ophthalmic
Surgical and Laboratory equipment
Imaging and monitoring equipment
• Hand held instruments, lasers dental chairs• Cements and impression materials, implants
• Orthopedic replacements• Implantable spinal devices
• Dental equipment • Dental materials
• Cataract surgery products, intraocular lenses,• Contact + prescription lenses, eye care equipment
• Ophthalmic systems and devices• Consumer eye products
• Pacemakers, defibrillators, heart-lung machine• Artificial organs, neurostimulators, hearing aids
• Cardio implants and devices• Non-cardio electro-medical implantable
devices
• Robotics, advanced wound care, sutures • Catheters, lab scales, furnaces, laboratory instruments
• Surgical equipment and systems• Lab and hospital furniture and supplies
• Devices for analysis of blood, tissues samples; chemical reagents, specialized microscopes
• Insulin + pain control pumps, drug/device combos
• In vitro diagnostics• Medication delivery / dialysis tools
• Ultrasound, MRI, cat scanners• X-ray equipment and medicine, fluoroscopes• Monitoring machines, remote-patient care
• High-tech imaging equipment• Irradiation apparatus• Monitoring & safety engineered devices
• Hip and joint replacements, bone nails screws• Spinal stimulators, thoracolumbar implants
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Medical Device industry segments
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isn’t functioning properly should be considered for metal ion testing. Adverse effects related to the ion levels include skin rash, visual impairments, depression, kidney impairment and thyroid dysfunction.
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Source: http://www.fda.gov/MedicalDevices/Safety/AlertsandNotices/ucm335775.htmSee also: http://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/Overview/ClassifyYourDevice/ucm051530.htm
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What you need to know about Emtree1. Emtree is a faceted, polyhierarchical thesaurus (14 facets)
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What you need to know about Emtree2. Focus on drugs and devices, with dynamic updating
Structure
Drug-rich content• >30,000 drug terms• ALL generics, trade names
& chemical names
Faceted structure• natural-language• synonym-rich• polyhierarchical
Dynamic updating• candidate term source list• updates 3x each year• all terms backposted
Content Updates
Medical devices• .> 3,000 device terms
(pre-2012: <1000 terms)
For further information: http://www.embase.com/info/what-is-embase/emtree
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Function Search date: in 2011Emtree Preferred Term: 4 [n [1 (2 cyano 1
oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidineCandidate Term: tofacitinib
Embase Most records are indexed with: 4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidine(A few records are indexed with tofacitinib as candidate term)
Search 4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidine most results tofacitinib retrieves some hits(these are the records in which tofacinib is a candidate term)
3. Backposting
What you need to know about Emtree
Function Search date: in 2011 Search date: > Jan-2012Emtree Preferred Term: 4 [n [1 (2 cyano 1
oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidineCandidate Term: tofacitinib
Preferred Term: tofacitinibSynonym: 4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] n methylamino] pyrrolo [2,3 d]pyrimidine
Embase Most records are indexed with: 4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidine(A few records are indexed with tofacitinib as candidate term)
Via backposting, all records (for all years) are indexed with: tofacitinib
Search 4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidine most results tofacitinib retrieves some hits(these are the records in which tofacinib is a candidate term)
4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidine maps to tofacitinib
Both terms same results (all years)
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Questions so far ?
What you need to know about Emtree
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How to search Emtree in Embase.com
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How to search Emtree in Embase.com
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How to search Emtree in Embase.com
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How to search Emtree in Embase.com
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How to search Emtree in Embase.com
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How to search Emtree in Embase.com
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How to search Emtree in Embase.com
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(… continued)
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How to search Emtree in Embase.com
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How to search Emtree in Embase.com
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How to search Emtree in Embase.com
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How to search Emtree in Embase.com
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How to search Emtree in Embase.com
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Questions so far ?
How to search Emtree in Embase.com
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1. Identify and search core concepts on Emtree using “Find Term”
(review relevant articles for possible additional terms)
- explode concepts for broad retrieval (e.g. ‘hip prosthesis’/exp )
- exact search for precise results (e.g. ‘Mckee Farrar prosthesis’/de )
- major focus for highest precision (e.g. ‘Mckee Farrar prosthesis’/mj )
- phrase search for increased sensitivity (e.g. hip:de )
(candidate terms are found using :de but not /de)
Combine using Query Builder or within Session Results, or:
Take to Drug / Disease search (see step 3)
Using Emtree to get the best out of your search
Search strategy (1)
(to be continued)
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Using Emtree to get the best out of your search
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isn’t functioning properly should be considered for metal ion testing. Adverse effects related to the ion levels include skin rash, visual impairments, depression, kidney impairment and thyroid dysfunction.
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Using Emtree to get the best out of your search
Search strategy (1): initial approach
Question: where are hip implants in Emtree ?
Solutions: (1) use Find Term hip hip prosthesis (2) search ‘hip implant’:ti and review index
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Using Emtree to get the best out of your search
Search strategy (1): revised approach
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Using Emtree to get the best out of your search
Search strategy (1): compiled results
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1. Identify and search core concepts on Emtree using “Find Term”(review relevant articles for possible additional terms)- explode concepts for broad retrieval (e.g. ‘hip prosthesis’/exp )- exact search for precise results (e.g. ‘Mckee Farrar prosthesis’/de )- major focus for highest precision (e.g. ‘Mckee Farrar prosthesis’/mj ) - phrase search for increased sensitivity (e.g. hip:de )
(candidate terms are found using :de but not /de)Combine using Query Builder or within Session Results, or:Take to Drug / Disease search (see step 3)
Using Emtree to get the best out of your search
Search strategy (1)
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1. Identify and search core concepts on Emtree using “Find Term”(review relevant articles for possible additional terms)- explode concepts for broad retrieval (e.g. ‘hip prosthesis’/exp )- exact search for precise results (e.g. ‘Mckee Farrar prosthesis’/de )- major focus for highest precision (e.g. ‘Mckee Farrar prosthesis’/mj ) - phrase search for increased sensitivity (e.g. hip:de )
(candidate terms are found using :de but not /de)Combine using Query Builder or within Session Results, or:Take to Drug / Disease search (see step 3)
2. Add additional concepts from free text(e.g. concepts not represented in Emtree)
3. Consider drug & disease subheadings- search floating subheadings (to be demonstrated)- add subheadings to specific drug/disease terms (cf. step 1)
Using Emtree to get the best out of your search
Search strategy (2/3)
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isn’t functioning properly should be considered for metal ion testing. Adverse effects related to the ion levels include skin rash, visual impairments, depression, kidney impairment and thyroid dysfunction.
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Using Emtree to get the best out of your search
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Using Emtree to get the best out of your search
Search strategy (2): add concepts from free text
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Using Emtree to get the best out of your search
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Using Emtree to get the best out of your search
Search strategy (3): add disease subheadings
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Using Emtree to get the best out of your search
Search strategy (3): intermediate results
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Using Emtree to get the best out of your search
Search strategy (4): systematic reviews
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Using Emtree to get the best out of your search
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isn’t functioning properly should be considered for metal ion testing. Adverse effects related to the ion levels include skin rash, visual impairments, depression, kidney impairment and thyroid dysfunction.
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Using Emtree to get the best out of your search
(Back to) Search strategy (3): specific disease subheadings
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Using Emtree to get the best out of your search
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Using Emtree to get the best out of your search
Search strategy (3): specific disease subheadings
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Using Emtree to get the best out of your search
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Using Emtree to get the best out of your searchResults: article #1
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Using Emtree to get the best out of your searchResults: article #1
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Using Emtree to get the best out of your searchResults: article #2
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Using Emtree to get the best out of your search
as
Results: article #2
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Using Emtree to get the best out of your searchOriginal article
(… continued)
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Using Emtree to get the best out of your searchComparison with MeSH
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Medical devices in Emtree: a summary1. Emtree structure
Pre-2012: Apparatus , equipment and supplies Post 2012:- General apparatus …- Laboratory apparatus …- Medical apparatus …
2. Emtree terms
Jan 2012: 900 medical device terms
Jan 2013: 2500 medical device terms
Apr 2013: 3200 medical device terms
3. Emtree is key to getting the best search results• Browsing Emtree => explode, /de, major focus, phrase search• Use Query builder / add subheadings for drugs / diseases• Augment search using judiciously chosen free text phrases• Review articles to find new relevant index terms and repeat
Sources consulted include:- http://www.fda.gov/MedicalDevices (for classifications)- MeSH (Medical Subject Headings)- EMMET (Elsevier Merged Medical Thesaurus)- ECRI (Universal Medical Device Nomenclature System)- http://www.clarimed.com/medical-devices
• A Q&A will be sent by email.• For more information and questions , please contact your regional
e-helpdesk• Our next webinar is an introduction on April 24 and we will focus
on EBM on May 22, after we get back from MLA.• Go to http://www.elsevier.com/online-tools/embase/support for
all Embase webinars and archives.
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