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Module 4: Literature Search Strategy

Where should I look for evidence?

Where should you start looking for information? 

Consider the questions featured in the graphic below. Think about these questions when determining which research database or web resource you might want to use. As you can see, what you choose will depend on your question, your information needs, and who will be receiving the information.  

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Special thanks to Bucknell University, Bertrand Library Research Services for creating and sharing this poster under a Creative Commons License.

Background Information 

This type of information usually provides users with broad overviews of medical topics. Information sources can vary from expert opinions to clinical overviews or practice guidelines.

  • Textbooks
  • Point of care tools & clinical summaries

Point of Care Tools

Textbooks

Unfiltered Literature 

Includes original research that has not yet been synthesized or aggregated. As such, they are more difficult to read, interpret, and apply to practice. 

  • Individual journal articles -- not critically appraised
  • Randomized controlled trials (RTCs) 
  • Cohort studies
  • Case-controlled studies
  • Case series/reports

Filtered Literature 

Includes resources that appraise the quality of studies and often propose recommendations for practice. 

  • Systematic reviews
  • Meta-analysis
  • Critically appraised topics --  includes review articles
  • Critically appraised individual articles 
  • Evidence-based guidelines -- also known as clinical practice guidelines