Critical appraisal of studies is an integral component of a systematic review and some other syntheses. "Critical appraisal is the process of carefully and systematically examining research to judge its trustworthiness, and its value and relevance in a particular context" (Burls, 2009).
Not sure if your review type requires the critical appraisal of studies?
The following table provides a typology of review types that specifically indicates whether or not critical appraisal is generally a component of 14 different reviews types Table 1: Main review types characterized by methods used (Grant & Booth, 2009).
Burls, A. (2009). What is critical appraisal? Hayward Medical Communications.
Grant, M. J., & Booth, A. (2009). A typology of reviews: an analysis of 14 review types and associated methodologies. Health Information & Libraries Journal, 26(2), 91-108.