Study
Bias Arising From the Randomization Process
Bias caused by Deviations From Intended Interventions
Bias caused by Missing Outcome Data
Bias in Measurement of the Outcome
Bias in Selection of the results
Overall risk of bias
Gandara et al. Some concerns Some concerns Low High Some concerns High
Somlo et al. High High Low High Low High
Kemp et al. Low Low Low Low Low Low
Planting et al. Low Some concerns Low Low Low Some Concerns
Weijl et al. Some concerns Some concerns Low Low Low Some Concerns
Zuur et al. Some concerns Low Low Low Low Some Concerns
Yıldırım et al. Some concerns Some concerns Low Low Low Some Concerns
Riga et al. High Some concerns Some concerns Low Low High
Marshak et al. Low Low Low Low Low Low
Yoo et al. High Some concerns High Low Low High
Villani et al. Low Low Low Low Some concerns Some Concerns
Crabb et al. Low Some concerns Low Low Low Some Concerns
Delarestaghi et al. Some concerns Some concerns Low High Low High risk
Nasr et al. High Some concerns Low Low Low High risk
Rolland et al. Low Low Low Low Low Low
Duinkerken et al. High Low Low High Low High
Campbell et al. Low Some concerns Low Low Low Some Concerns
Moreno et al. Low Low Low Low Low Low