Searching the literature for studies for a systematic review. Part 1: Identifying search concepts in a question

Searching the literature for studies that meet the inclusion criteria is one of the first stages of a systematic review.1 A quality literature search is a systematic survey of the literature on a specific topic or clinical question. It goes beyond a cursory search of the literature to a series of steps that are well organized and planned before the search itself: selecting relevant databases, formulating a structured question, applying specific criteria before executing the search to reduce selection bias, creating a series of search queries using relevant keywords, and reviewing each result for suitability.

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