Table 2 Quality rating criteria
Quality rating | Criteria | AMSTAR 2 critical domains |
|---|---|---|
High | No or one non-critical weakness | • Protocol registered before commencement of the review (item 2) • Adequacy of the literature search (item 4) • Justification for excluding individual studies (item 7) • Risk of bias from individual studies being included in the review (item 9) • Appropriateness of meta-analytical methods (item 11) • Consideration of risk of bias when interpreting the results of the review (item 13) • Assessment of presence and likely impact of publication bias (item 15) |
Moderate | More than one non-critical weakness | |
Low | One critical flaws with or without non-critical weakness | |
Critically low | More than one critical flaw with or without non-critical weakness |