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Table 2 Definitions of the components of the CERQual approach

From: Applying GRADE-CERQual to qualitative evidence synthesis findings: introduction to the series

Component

Definition

Methodological limitations

The extent to which there are concerns about the design or conduct of the primary studies that contributed evidence to an individual review finding

Coherence

An assessment of how clear and cogent the fit is between the data from the primary studies and a review finding that synthesises that data. By ‘cogent’, we mean well supported or compelling

Adequacy of data

An overall determination of the degree of richness and quantity of data supporting a review finding

Relevance

The extent to which the body of evidence from the primary studies supporting a review finding is applicable to the context (perspective or population, phenomenon of interest, setting) specified in the review question