Table 1 Risk of bias for included RCTs
Authors, year | Selection bias, random sequence generation | Selection bias (allocation concealment) | Detection bias, blinding (outcome assessment) | Attrition bias, incomplete outcome data | Reporting bias, selective reporting | Performance bias, blinding (participants and personnel) |
|---|---|---|---|---|---|---|
Debussche et al. 2018 [50] | Low | Low | Low | Low | Low | Low |
Zhong et al. 2015 [51] | NCR | NCR | High | High | Low | NCR |
Gagliardino et al. 2014 [52] | NCR | NCR | High | NCR | Low | High |
Mash et al. 2014 [53] | Low | NCR | High | Low | Low | High |