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Table 3 Recommendations by Cochrane Review Groups for using quality assessments of individual studies in reviews. Values are numbers (percentages)

From: Recommendations by Cochrane Review Groups for assessment of the risk of bias in studies

Approach recommended All (n = 50) Components (n = 41) Scales (n = 9)
Analytical approach 28 (56) 20 (49) 8 (89)
Descriptive approach 1 (2) 1 (2) 0 (0)
No information 21 (42) 20 (49) 1 (11)