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Table 2 Percentage of studies with stated Risk of Bias in each domain (n = 40)

From: Methodological review: quality of randomized controlled trials in health literacy

 

Random sequence generation (selection bias)

Allocation concealment (selection bias)

Blinding of participants and personnel bias (performance bias)

Blinding of outcome assessment (detection bias)

Incomplete outcome data (attrition bias)

High

0 %

15 %

38 %

25 %

33 %

Unclear

28 %

33 %

40 %

40 %

0 %

Low

73 %

53 %

23 %

35 %

68 %