Definition: A form of knowledge synthesis that applies systematic review methodology within a time-constrained setting. That is, the components or steps of the systematic review process are simplified, accelerated/fast-tracked, or omitted/side-stepped to produce information in a shortened timeframe.
Aim: To expedite the conduct of reviews to inform health policy and systems decisions, and to provide actionable and relevant evidence in a timely and cost-effective manner.
Key characteristics: A rapid review is best designed for new or emerging research topics, updates of previous reviews, critical topics, to assess what is already known about a policy or practice.
Main steps:
- Identify a research topic and frame a narrow research question
- Select your study inclusion and exclusion criteria (e.g. time period, language, location, age range, animal or human studies, type of published material)
- Create a study search protocol using keywords from the research question
- Plan and execute a literature search using a key database
- Store all citations and maintain a record
- Screen your results to select eligible documents
- Report for publication
Strengths: Useful for addressing issues that need quick decisions. Faster time to completion, typically done in 5 weeks up to 3 months.
Drawbacks/Limitations: Risk of missing the significance of a theme that emerges from the literature. Greater chance of bias. Limited appraisal and assessment. Limitation of the search not being comprehensive.