eXtreme Searching: Getting the Most from PubMed and Google Part I: PubMed

1. eXtreme Searching: Getting the Most from PubMed and GooglePart I: PubMed Arpita Bose, MLIS Outreach and Communications Coordinator National Network of Libraries of Medicine Middle Atlantic Region April 30, 2009

2. Objectives/Agenda • Quick Review of Basic Skills • Mapping • Phrase Searching • Limits • What’s New • MeSH Database • Field Tag Searching • Subsets • Clinical Queries and Special Queries

3. What Is PubMed? • Produced by the National Center for Biotechnology Information & the National Library of Medicine • Accessible worldwide at no charge • PubMed includes: • MEDLINE (1966 to present) • In-process & publisher supplied citations • OLDMEDLINE (1950s to 1965) • Out-of-scope citations

4. What Is MEDLINE? • The world’s largest biomedical database • MEDLINE covers: • Medicine • Dentistry • Veterinary Science • Nursing • Other Biological Sciences • MEDLINE is indexed with MeSH terms

5. What Is MeSH? • Medical Subject Headings • Controlled vocabulary terms • Explode • Automatic Term Mapping

6. What’s the Difference Between PubMed and MEDLINE?

7. PubMed Teaching Tools MEDLINE/PubMed Resources Guide http://www.nlm.nih.gov/bsd/pmresources.html • MEDLINE citation counts • Journal counts • Field tag abbreviations • Subheading hierarchies • Subset strategies • Fact sheet: What is the Difference between MEDLINE and PubMed?

8. PubMed Teaching Toolshttp://nnlm.gov/mar/training/ Presentations, manuals Trifold brochures

9. Limits • These limits are assigned at the indexing stage  Restricted to MEDLINE: • Humans or Animals • Gender • Type of Article • Ages • These limits are assigned prior to indexing: • Languages • All Subsets (except MEDLINE)

10. What’s New? Automatic Term Mapping Change

11. ATM Tips • Details, Details, Details! • Modify the Query Translation box • Use Boolean operators: AND OR NOT • Use search tags • Use MeSH Database • Use Advanced Search

12. Advanced Search -- Try It! • Single Citation Matcher will be discontinued • Use Advanced Search box (Citation Sensor) • Use field searching • Limits, Preview/Index, History, Clipboard, Details will move • Links in Advanced Search

13. What’s New? Citation Sensor GOOD! BAD!

14. New Summary Display • No icons • Replaced with links to PMC and/or publisher • Article title and author fields • Positions flipped • Clickable link now article title, not author names • Related Articles link moved

15. Discovery Tools Goal: Serendipitous searching • Recent Activity • Free full text in PubMed Central • Patient Drug Information • Drug Sensor • Related Reviews

16. MyNCBI Redesign • New look and navigation • New features • Username retrieval • My Bibliography

17. Changes to MeSH • New MeSH terms • Evidence-Based Dentistry • Evidence-Based Nursing • Evidence-Based Practice • Integrative Medicine • New age check tag: Young Adult • 19-24 (U.S. Census definition) • Summary of changes: http://www.nlm.nih.gov/pubs/techbull/nd08/nd08_medline_data_changes_2009.html

18. MeSH Database • Search with MeSH terms (Headings, Subheadings, Publication Types); Supplementary Concept terms (Substance Names); Pharmacological Action terms • See scope note and other helpful information • Display MeSH terms in the hierarchy • Limit MeSH terms to a major concept • Attach subheadings • Link to NLM MeSH Browser

19. Floating a Subheading • Definition: Search for a subheading without attaching it to a particular MeSH heading • Goal: Broader retrieval (but less precision) • Examples • Not sure which drug should be used for therapy? /tu • Not sure which drug caused the adverse effect? /ae • The subheading aspect is of interest, but it is not associated with the searched MeSH term • Indirect questions: What conditions does smoking affect?

20. Searching with Field Tags • Affiliation [AD] • Institutional affiliation and address of the first author of the article • Be creative/comprehensive: Institution name; endowed name; abbreviations; zip code; e-mail suffix • Journal Name [TA] • All single-word journal titles should be tagged • Personal Name as Subject [PS]

21. Searching with Field Tags (continued) • MeSH Headings [MH] • Major MeSH [majr] • To turn off auto-explode • [mh:noexp] • [majr:noexp] • Subset [SB] • LinkOut provider: loprovmedlib [sb]

22. Searching with Field Tags (continued) • Journal subsets • Bioethics journals: jsubsete • Health administration journals, non-Index Medicus: jsubseth • Index Medicus journals: jsubsetim • Consumer health journals, non-Index Medicus: jsubsetk • Health technology assessment journals: jsubsett

23. Other Search Types • Clinical Queries • Evidence-based medicine hedges • Systematic Reviews: Also found in Limits > Subsets • Clinical Study Category • Special Queries

24. MyNCBI Use a MyNCBI personal account to: • Save citations • Save searches • Create automatic e-mail updates (current awareness) • Add custom filters (results tabs) • Personalize the look of PubMed Use a MyNCBI shared account to: • Create MyNCBI Shared Filters • Activate Shared Filters with a Specialized URL

25. Saving Citations 1. Select citations 2. Send to Collections

26. Saving Searches You will be prompted to sign into your MyNCBI account

27. When to Use E-Mail Updates • Subject search for yourself or a patron • Table of contents (TOC) for a journal • Publications from your institution • Use [ad] for affiliation, e.g. NYU Medical Center [ad] • Publications from an individual

28. Grouping Results with Filters 1 2

29. Browse for Filters

30. Personalizing Your PubMed View

31. Conclusion Questions/Comments? Thank You! Arpita Bose arpita.bose@med.nyu.edu 212-263-4176