Table 2. CERQual assessment components [25].

COMPONENT	Definition
Methodological limitations	The extent to which problems were identified in the way in which the primary studies which contributed to the evidence for a review finding were conducted
Relevance	The extent to which the primary studies supporting a review finding are applicable to the context specified in the review question
Coherence	The extent to which the pattern that constitutes a review finding is based on data that is similar across multiple individual studies and/or incorporates (compelling) explanations for any variations across individual studies
Adequacy of data	An overall determination of the degree of richness and/or scope of the evidence and quantity of data supporting a review finding