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Table 3 Risk of bias table for cluster randomized control trials and controlled before–after trials

From: Rapid response systems: a systematic review and meta-analysis

Study

Allocation sequence generation

Allocation concealment

Baseline comparability

Complete outcome data

Outcome variables assessed blindly

Protection from contamination

Selective outcome reporting

Free from other biases

Bristow et al. [42]

High risk

High risk

Low risk

Low risk

Low risk

Low risk

Low risk

Low risk

Priestley et al. [12]

High risk

High risk

High risk

High risk

Unclear

Unclear

High risk

Low risk

Hillman et al. [5]

Low risk

Low risk

Low risk

Low risk

Low risk

Low risk

Low risk

Low risk