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Table 1 Risk of bias judgement for sequence generation of randomised trials in Cochrane and non-Cochrane reviews

From: Risk of bias assessment of sequence generation: a study of 100 systematic reviews of trials

Sequence generation ROB judgement of randomised trials High ROB Low ROB Unclear ROB
Cochrane reviewsa 8 (0.8%) 462 (47.0%) 514 (52.2%)
Non-Cochrane review using Cochrane ROB toolb 80 (5.8%) 751 (54.6%) 545 (39.6%)
  1. aSixty-four reviews, including 984 randomised trials
  2. bThirty-six reviews, including 1376 studies; one review is awaiting classification and contains an additional 35 randomised trials