Skip to Main Content

Systematic Review Service

Partnering with MSK community members interested in systematic and related reviews

Review Type Definitions

There are many different types of reviews. Here are some of the most common ones the MSK Library assists with:

Narrative reviews, or literature reviews, offer flexibility in regards to "how the research or clinical question is formulated (or the scope of the review established), how literature is evaluated and how the findings are organised and presented." (Source)

Scoping reviews "are an ideal tool to determine the scope or coverage of a body of literature on a given topic and give clear indication of the volume of literature and studies available as well as an overview (broad or detailed) of its focus." They require most of the same steps as systematic reviews. (Source)

Systematic reviews "[attempt] to collate all empirical evidence that fits pre-specified eligibility criteria in order to answer a specific research question. [They use] explicit, systematic methods that are selected with a view to minimizing bias, thus providing more reliable findings from which conclusions can be drawn and decisions made" (Source)

Meta-analyses follow "a research process used to systematically synthesise or merge the findings of single, independent studies, using statistical methods to calculate an overall or 'absolute' effect." They adhere to systematic review methods, with an additional statistical analysis. (Source)

Learn more about these and other kinds of reviews.

Review Type Comparison Table

Different review types have different requirements, scopes, and standards:

  Narrative/Literature Reviews Scoping Reviews Systematic Reviews  Meta-Analyses 
Review team with multiple members  No Yes Yes Yes
Registered and/or published protocol  No Yes Yes Yes
Focused, narrow research question  No No Yes Yes
Transparent, comprehensive search strategy  No Yes Yes Yes
Clear criteria for inclusion/exclusion of studies  No Yes Yes Yes
Well-documented screening process with at least two reviewers  No Yes Yes Yes
Quality assessment of the included studies by at least two reviewers  No No Yes Yes
Formal data collection from the included studies by at least two reviewers   No Yes Yes Yes
Explicit reporting standards (e.g., PRISMA, MOOSE, etc.)   No Yes Yes Yes
Detailed descriptions of the included evidence  Yes Yes Yes Yes
Statistical analysis of the included studies  No No No Yes