169 Effects of de-implementation strategies aimed at reducing low-value nursing procedures 6 Figure 2. Risk of Bias Cochrane Effective Practice and Organisation of Care (EPOC) of controlled studies (n=15) Randomization Low risk if randomization method is described Allocation concealment Low risk if unit of allocation was by team/institution OR by patient with some kind of randomization method Baseline measurement similar Low risk if baseline measurements were performed and no important difference present across groups OR imbalanced but appropriate adjusted Baseline characteristics similar Low risk if characteristics were reported and similar Incomplete outcome data Low risk if missing outcomes were unlikely to bias the results Blinding Low risk if the authors stated blind assessment OR objective outcomes Contamination Low risk if allocation was by team/ institution/practice and unlikely control group received intervention Selective reporting Low risk if there is no evidence that outcomes were selectively reported, and Other Low risk if there is no evidence of other risk of bias Green circle: low risk of bias, red circle: High risk of bias, empty box: unclear risk of bias.
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