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How to practice EBM: Finding the Evidence

Learn how to formulate focused questions, conduct searches on TRIP and PubMed databases, and develop effective search strategies in Evidence-Based Medicine. Hands-on practice included. Useful tips and tools provided.

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How to practice EBM: Finding the Evidence

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  1. How to practice EBM:Finding the Evidence Owen Coxall, Tatjana Petrinic & Nia Wyn Roberts Bodleian Health Care Libraries

  2. Session objectives • Formulate a focused question • Turn a focused question into a search • Search TRIP & PubMed

  3. Formulate a focused question Patient / Problem / Population Intervention Comparison Outcome

  4. Focused question P: Pregnant smokers I: nicotine replacement C: N/A O: cessation Is nicotine replacement therapy an effective and safe smoking cessation treatment in pregnant women?

  5. Quick search • TRIPwww.tripdatabase.com • PubMed Clinical Querieswww.pubmed.gov

  6. Hands-on • Formulate a focused question • Use your own question or one of the examples in your pack • Record the search terms you’re using • Run a quick search on TRIPwww.tripdatabase.com • Run a quick search on PubMed Clinical Queries www.pubmed.gov

  7. Run a full search strategyWhy bother? • Too few results • Too many results • Irrelevant results • Submitting a funding proposal • Writing a guideline • Conducting a systematic review

  8. Combine terms withOR smoking Smoking OR tobacco – either term can be present tobacco

  9. Combine terms withAND Smoking AND cessation – both terms must be present smoking cessation

  10. Quick tips • Take a common word stem and look for spelling variations e.g. • smok* - will retrieve papers smoking, smoker, smokers… but also smoked salmon • Phrase searching • Use double quote marks if you want words to appear next to each other e.g.“smoking cessation”

  11. Develop a search strategy • pregnan* • smoking or smoker* • nicotine replacement OR nicotine patch* • cessation OR stop* OR quit* • 1 AND 2 AND 3 AND 4

  12. Perform a search on PubMed

  13. Searching tips: PubMed Subject searching - use MeSH • Subject headings added to articles on Medline • Search the MeSH Database • Finding similar articles – use the ‘Related articles’ link

  14. Hands-on • Take your focused question: • Run further searches on PubMedhttp://www.pubmed.gov

  15. Help • Finding the Evidence tutorials: • EBM web-site – EBM tools – Finding the Evidencehttp://www.cebm.net • PubMed • Short online tutorials • Quick guides to PubMed – basics, MeSH search and MyNCBI http://www.nlm.nih.gov/bsd/disted/pubmed.html

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