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Evidence synthesis refers to any method of identifying, selecting, and combining results from multiple studies. A systematic review is a type of evidence synthesis. Other types of evidence synthesis include:
Literature (Narrative) Review
A broad term referring to reviews with a wide scope and non-standardized methodology.
Search strategies, comprehensiveness, and time range covered will vary and do not follow an established protocol.
Scoping Review or Evidence Map
Systematically and transparently collect and categorize existing evidence on a broad question of policy or management importance.
Seeks to identify research gaps and opportunities for evidence synthesis rather than searching for the effect of an intervention.
May critically evaluate existing evidence, but does not attempt to synthesize the results in the way a systematic review would. (see EE Journal and CIFOR)