Bordin Sapsomboon 26 February 2014 [email protected] · 2014-02-26 · Bordin Sapsomboon 26...
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Transcript of Bordin Sapsomboon 26 February 2014 [email protected] · 2014-02-26 · Bordin Sapsomboon 26...
Literature SearchLiterature SearchPubMed & ERIC
Bordin Sapsomboon26 February 2014
http://www.si.mahidol.ac.th/[email protected]
Objectives Know
Information seeking Literature search : PubMed, ERIC
Do Searching : PubMed, ERIC Searching : PubMed, ERIC Keywords formation Advanced level : MeSH Advanced level : MeSH
Evaluation
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Why Search for Medical Information ?
5 Roles (Medical Informatics)
Life-long learner Clinician Researcher Teacher/Communicator ManagerManager
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Skeptic
5นาฬาคริี http://bit.ly/Y2HtVJช้างตกมนั http://bit.ly/ewUepY
Human and Information
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Skeptic
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SSearching : Detective
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Google: Doctor’s Handbook !
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Information : Certainty Belief Opinion Fact & Knowledgeg Truth
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What is Information ? Information vs Medical Information
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Information Source Document
Journal article Research paper Newspaper Magazine g
E-document Web page : HTML document Web page : HTML document E-journal : PDF document
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Databases
Internet Database Newspaper Public database
Literature Database PubMed PubMed Ovid OCLC OCLC Science Direct
ERIC ERIC16
Siriraj Medical LibrarySiriraj Medical LibraryDatabases
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PubMed.Org
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ERIC.ED.GOV
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SLiterature Search
Text matching Word or Words
All documents contains the word “SARS” any where
Keywords Synonyms
All documents about “SARS”
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Strategies for Literature Search
Number of Items Found Too many v.s. Too few
Relevancyy Broad v.s. Specific Relevant v.s. Irrelevant Relevant v.s. Irrelevant
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Search Tools
Boolean operators AND, OR, NOT, ( )
Fields in article / database Title, Abstract, Author, UI number
MEDLINE database MEDLINE database Filter - Limit Medical Subject Headings Medical Subject Headings
(MeSH)
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Strategies : Broaden
Synonym AIDS, HIV
Thesaurus Infant, Toddler
Boolean operator Boolean operator Pepsi OR Coke
H di Heading automobile
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Strategies : Narrow
More keywords Red blood cell diseases
Boolean operatorp AIDS AND Thailand Thalassemia NOT THAILAND Thalassemia NOT THAILAND
Heading radiotherapy (only) radiotherapy (only)
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Relevancy Find
“SARS and Cause” “AIDS in Children” “Lung cancer and radiotherapy” “Mobile phone in 2007” p “All articles about lung cancer” “All articles by Dr Robinson” All articles by Dr. Robinson
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Strategies : Relevancy
Broaden and Narrow-down Database tools
Limits : AIDS in English languageg g g Query language MeSH MeSH
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Database Query Find “lung cancer”
"lung neoplasms"[MeSH Terms] g p [ ]OR lung cancer[Text Word]
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MeSH Medical Subject Headings Heading
Diseases Subheading
Virus Diseases Virus Diseases
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MeSH : Example Virus Diseases
RNA Virus Infections Nidovirales Infections
• Coronaviridae Infections– Coronavirus Infections
[C02.782.600.550.200]
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Word
Existing Documents Search Strategy Keywords
Operator
RelevantFound
MeSH
Multiple Foundresources
Document Space
Found DocumentsRelevant Documents Found DocumentsRelevant Documents33
Relevant Documents Matching
Perfect Partial
Scoring / Ranking 100% = “Perfect” matching 100% Perfect matching Calculation
Frequency of the search wordFrequency of the search word appeared in the document
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Bird
SARS
BirdFlu
SARSSARS
Document Spacep
lRelevant Documents35
Relevant Information Source
Use relevant information source!
Medical information MEDLINE database www pubmed org www.pubmed.org
G l i f ti General information Start with good search engines ?
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Relevant Documents Perfect “matching”
Matching to your NEEDS Not perfect TEXT matching
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Find Sars Coronavirus Etiology / Causegy Mobile phone Brain tumor Brain tumor Risk Shoulder dislocation Joint instabilityy
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