. 2020 Apr 13;10(5):667–673. doi: 10.1177/2192568220917926

Table 2.

Rating Overall Confidence in the Results of the Review.

High: No or 1 noncritical weakness

The systematic review provides an accurate and comprehensive summary of the results of the available studies that address the question of interest

Moderate: More than 1 noncritical weakness^a

The systematic review has more than 1 weakness but no critical flaws. It may provide an accurate summary of the results of the available studies that were included in the review

Low: One critical flaw with or without noncritical weaknesses

The review has a critical flaw and may not provide an accurate and comprehensive summary of the available studies that address the question of interest

Critically low: More than 1 critical flaw with or without noncritical weaknesses

The review has more than 1 critical flaw and should not be relied on to provide an accurate and comprehensive summary of the available studies

^a Multiple noncritical weaknesses may diminish confidence in the review, and it may be appropriate to move the overall appraisal down from moderate to low confidence.