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Table 2 Effective Practice and Organisation of Care group risk of bias criteria for randomised controlled trials, quasi-experimental studies and pretest-posttest designs

From: The effectiveness of interventions to reduce peripheral blood culture contamination in acute care: a systematic review protocol

  High risk Low risk Unclear risk
1. Was the allocation sequence adequately generated?
2. Was the allocation adequately concealed?
3. Were baseline outcome measurements similar?
4. Were baseline characteristics similar?
5. Were incomplete outcome data adequately addressed?
6. Was knowledge of the allocated interventions adequately prevented during the study?
7. Was the study adequately protected against contamination?
8. Was the study free from selective outcome reporting?
9. Was the study free from other risks of bias?