information retrieval for hta 2nd part search strategies ......databases retrieval tools (or troops)...

Information Retrieval for HTA

2nd part Planning Strategies for

HTA Searching

Bibl. Daniel Comandé dcomande@iecs.org.ar

Anatomy of HTA

1.- QUESTION

• IS BOTULINUM TOXINE USEFUL TO COMBAT MIGRAINES?

2.- TRANSLATION (Technology / Health Matters)

• Botulinum Toxine AND Migraines

3.- Search Strategy

• (Botulinum Toxine AND Migraines) AND Evidence Filters

Planning Search Strategies

Convergent Assault

Infantry

Cavalry & Siege

Machines

Components of HTA Search Strategy

HTA

Technology Terms

Health Subject Terms

Evidence Filters

Databases retrieval tools (or Troops)

Thesaurus Terms

Boolean operators (AND, OR, NOT)

Truncation

Field and cross-field searching (title, abstract, title & abstract, etc.)

Phrase searching

Shared references

In Example: “Induced Hypothermia in Brain

Ischemia Prevention in Newborns”

Induced Hypothermia

Brain Hypoxia Ischemia

Search Results

Technology Terms Construction (Induced Hypothermia MeSH)

Technology Terms Construction (Induced Hypothermia Entry Terms)

Induced Hypothermia simplification

(Hypothermia, Induced[Mesh] OR hypothermi*[tiab)

(Hypothermia, Induced[Mesh] OR Mild hypothermia[tiab] OR Moderate hypothermia[tiab] OR Induced hypothermia[tiab])

(Hypothermia, Induced[Mesh] OR hypothermia[tiab] OR Moderate hypothermia[tiab] OR Induced hypothermia[tiab])

(Hypothermia, Induced[Mesh] OR hypothermia[tiab])

(Hypothermia, Induced[Mesh] OR hypothermia[tiab])

Health Subject Terms Construction (Brain Hypoxia-Ischemia MeSH)

Hypoxia-Ischemia, Brain[Mesh]

Health Subject Terms Construction (Brain Hypoxia-Ischemia Entry terms)

Brain Hypoxia Hypoxia Ischemia

Ischemic Encephalopathy

Ischemic-Hypoxic

Cerebral Hypoxia

Brain Hypoxia-Ischemia simplification

(Hypoxia-Ischemia, Brain[Mesh] OR Brain Hypoxia Ischemia[tiab] OR Brain Hypoxia ischemia[tiab] OR Ischemic Hypoxic Encephalopathy[tiab] OR Cerebral Hypoxia Ischemia[tiab] OR Brain Hypoxia ischemia[tiab])

(Hypoxia-Ischemia, Brain[Mesh] OR Brain Hypoxia ischemia[tiab] OR Brain ischemia hypoxia[tiab] OR Ischemic Hypoxic Encephalopathy[tiab] OR Cerebral Hypoxia Ischemia[tiab] OR Brain Hypoxia ischemia[tiab])

(Hypoxia-Ischemia, Brain[Mesh] OR Brain Hypoxi*[tiab] OR Brain ischemi*[tiab] OR Ischemic Hypoxic[tiab] OR Hypoxic Encephalopath*[tiab] OR Cerebral Hypoxi*[tiab] OR Cerebral ischemi*[tiab] OR Ischemic Encephalopath*[tiab])

(Hypothermia, Induced[Mesh] OR hypotherm*[tiab]) AND (Hypoxia-Ischemia, Brain[Mesh] OR Brain Hypoxi*[tiab] OR Brain ischemi*[tiab] OR Ischemic Hypoxic[tiab] OR Hypoxic Encephalopath*[tiab] OR Cerebral Hypoxi*[tiab] OR Cerebral ischemi*[tiab] OR Ischemic Encephalopath*[tiab])

Hypothermia, Induced[Mesh] OR

hypotherm*[tiab]

Hypoxia-Ischemia, Brain[Mesh] OR Brain Hypoxi*[tiab] OR Brain

ischemi*[tiab] OR Ischemic Hypoxic[tiab]

OR Hypoxic Encephalopath*[tiab]

OR Cerebral Hypoxi*[tiab] OR

Cerebral ischemi*[tiab] OR Ischemic

Encephalopath*[tiab]

Search Results

Thesaurus Term

Title & Abstract terms

Spelling

Other Terms (substances)

Other Terms (Trademarks)

Other Terms (Trials names)

The “wedge battle formation”

Evidence Filters (Limits)

Evidence providing studies

Randomized Controlled Clinical Trials

Practice Guidelines

Heath Technology Assessments

Meta-Analysis

Systematic Reviews

Observational Studies

Narrative Reviews

Case Series

Systematic Reviews

Practice Guidelines

Randomized Controlled Trials

The “envolving pincer”

Limits reduces the “enemy”results

Without Limits

With Limits

Search with and without LIMITS

The “enemy” sourrenders

Useful Evidence for HTA

Thank you for your attention Brigado!

Bibl. Daniel Comandé dcomande@iecs.org.ar