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Knowledge Syntheses: A How-To Guide

Overview of systematic review steps and resources to assist researchers conducting reviews

What is a Rapid Review?

What is it?

  • Often policy makers require a short deadline and a systematic review for synthesizing the evidence is not practical
  • A rapid review speeds up the systematic review process by omitting stages of the systematic review making it less rigorous

Rapid Reviews are best designed for:

  • New or emerging research topics
  • updates of previous reviews
  • critical topics
  • assess what is already known about a policy or practice using some systematic review methods
     

Outline of Stages

Timeframe: 

  • ≤ 5 weeks (varies)   
  • Depends on many factors such as but not limited to:
    • resources available
    • the quantity and quality of the literature
    • the expertise or experience of reviewers (Grant et al. 2009)

 

Question:

  • Narrow question, may use PICO

 

Sources and searches:

  • Sources are limited due to time constraints of searching
  • Still uses transparent and reproducible search methods

 

Selection:

  • Based on inclusion/exclusion criteria

 

Appraisal:

  • Critical and rigorous but time limited

 

Synthesis:

  • Descriptive summary or categorization of data
    • may still be quantitative

(Source: Khangura S. et al. (2012) Evidence summaries: the evolution of a rapid review approach)

Limitations

  • Search is not as comprehensive
  • In come cases, there may only be one reviewer.
  • Possible non-blinded appraisal and selection
  • Limited/cautious interpretation of the findings
  • No universally accepted definition of a "rapid review"
  • Be mindful of limitations and potential biases when cutting corners.
  • Can impact policy and practice but systematic reviews are still needed
  • You still need a content expert and those experienced with systematic reviews

(Source: Cochrane: Rapid Reviews-An Introduction (2014)

Other Names

  • Rapid Evidence Review
  • Rapid Evidence Assessment
  • Rapid Systematic Review
  • Expedited Review
  • Rapid Evidence Summary

 

Credit:

Adapted from Temple University Health Science Libraries

Rapid Review Methods Resources