Table 1.

Critical Domains of Methodological Quality Assessment Based on AMSTAR 2 Guidelines.

Critical Domains of Methodological Flaw
Protocol registered before commencement of the review Adequacy of the literature search Justification for excluding individual studies Risk of bias from individual studies being included in the review Appropriateness of meta-analytical methods Consideration of risk of bias when interpreting the results of the review Assessment of presence and likely impact of publication bias