medical searching kazem heidari. reading in medicine browsing reading for fun of it books and...
TRANSCRIPT
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Medical searching
Kazem Heidari
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Reading in medicine
• BrowsingReading for fun of itBooks and journals are used.
• Reading for informationApproach the literature answers for specific
questionFocused searching
• Reading for researchComprehensive view of the existing state of
knowledgeReviews (systematic) are used
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Reading journals
• Browsing mode– Printed version is easier.
• Problem solving mode– Electronic version is easier.
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Question
search
Answer
The better formulated your question is,
the more relevant your “answer” is likely to be.
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TYPES OF QUESTIONS
• Background
• Foreground
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Background and foreground questions
Background
Foreground
Experience with Condition
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Five Information Sources Clinicians Must Use
1. Journals: general, specialized, and summary2. MEDLINE, EMBASE and/or other major
database service(s)3. Internet: search engines, directories,
government sites, etc.4. Textbooks (slowly changing factual
information)5. “Personal collection” to support routine
activities (e.g., personal specialty reprint collection)
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Electronic Resources
• Databases
• Electronic textbooks
• Electronic journals – Free– Subscription services
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Benefits of electronic resources
We focus on online rather than print products because they are
generally easier to search and more current than
print products
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Search strategy
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Search Strategy
• A systematic process used to find the most relevant information on a topic:
– Useful reference sources, – Select works appropriate for the
research need,– Locates information– Evaluates the relevance of the
information found
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Principles are similarbut
Methods are different
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Question
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Question
Specify your search goalSensitive
Specific
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Question
Specify your search goalSensitive
SpecificSelecting Database
Bibliographic
Value added
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Question
Specify your search goalSensitive
SpecificSelecting Database
Bibliographic
Value added
Constructing the search strategy
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Constructing the search strategy
Selecting the most important and relevant words
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Constructing the search strategy
Selecting the most important and relevant words
Broad searching
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Constructing the search strategy
Selecting the most important and relevant words
Broad searching
Investigating the results
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Constructing the search strategy
Selecting the most important and relevant words
Broad searching
Investigating the results Few results
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Constructing the search strategy
Selecting the most important and relevant words
Broad searching
Investigating the results Few results
Browse
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Constructing the search strategy
Selecting the most important and relevant words
Broad searching
Investigating the results Few results
Browse
Change the wordsChange databaseApply
Finding synonyms
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Constructing the search strategy
Selecting the most important and relevant words
Broad searching
Investigating the results Few results
Large amount of results
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Large amount of results
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Large amount of results
Boolean searchingLimit fields Search filters
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Large amount of results
Boolean searchingLimit fields Search filters
Investigating the results
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Large amount of results
Boolean searchingLimit fields Search filters
Investigating the results
Few resultsLarge amount of results
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Large amount of results
Boolean searchingLimit fields Search filters
Investigating the results
Few resultsLarge amount of results
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Large amount of results
Boolean searchingLimit fields Search filters
Investigating the results
Few resultsLarge amount of results
Change databaseApply
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Databases
• Free• Not free OR• Prefiltered• Nonfiltered OR• Bibliographic• Fulltext
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Medline
• By US National Library of Medicine
• over 11,000,000 citations of both clinical and preclinical studies.
• comprehensive coverage of medical journals and because it is readily accessible.
• American bias
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Medline
Free of charge using• Pubmed
commercial vendorOVIDSilver Platter.
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www.pubmed.com
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi
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http://www.tums.ac.ir
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http://diglib.tums.ac.ir/
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EMBASE• Elsevier Science Publishers,
Netherlands• Type of Database: Bibliographic• Numbers of Journals: 3500• Bias: European in focus• Subject Coverage: Strong on
Pharmaceutical and Clinical Medicine• Overlap with MEDLINE estimated at
between 25 and 40%• 75% of References contain Abstracts
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http://diglib.tums.ac.ir/
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http://www.acpjc.org/
• ACP journal club– Prefiltered database– since 1991 – General purpose: select from the biomedical
literature articles that report original studies and systematic reviews that warrant immediate attention by physicians attempting to keep pace with important advances in internal medicine
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• Trip database:– Allows users to rapidly and easily
identify high quality medical literature from a wide range of sources
http://www.tripdatabase.com
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• Search in trip pic
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EMBASE
MEDLINE
UNIVERSE OF BIOMEDICAL JOURNALS30,000
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Grey Literature
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