Table 2 Risk of bias assessment for included RCTs
Author | Random sequence generation | Allocation concealment | Blinding of participants and personnel | Blinding of outcome | Incomplete outcome data | Selective reporting | Other sources of bias | Overall risk of bias |
|---|---|---|---|---|---|---|---|---|
Gambarini et al. 2013 [33] | Low | Unclear | Low | Low | Low | Low | Low | Low |
Neelakantan et al. 2015 [27] | Low | Low | Low | Unclear | Low | Low | Low | Low |
Pasqualini et al. 2015 [31] | Unclear | Unclear | Low | Low | Low | Low | Low | Low |