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Systematic reviews

Protocols, search strategies, screening, extraction and risk of bias — the decisions a review is judged on.

Guides in this topic

  1. 01How to build a systematic review search strategyA search is reproducible or it is not a systematic search. Here is how to build one that another researcher could run and get the same results.
  2. 02GRADE: what certainty of evidence means and how it is decidedA pooled estimate says what the evidence shows. Certainty says how much the estimate is likely to change when better evidence arrives — a separate and often more useful question.
  3. 03Risk of bias: choosing a tool and using it properlyRisk of bias is an assessment of whether a study's result can be believed, not a score of how well it was written up. The distinction changes how the assessment is done.
  4. 04How to write a systematic review protocolA protocol is what separates a systematic review from a literature search performed carefully. Here is what it has to decide, and why each decision has to be made before the results are known.

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