Table 4 Quality assessment of randomized controlled trials using the Cochrane Risk of Bias Tool
Author | Random sequence generation | Allocation concealement | Selective reporting | Other bias | Blinding of participants | Blinding of outcome | Incomplete outcome data | Final risk of bias |
|---|---|---|---|---|---|---|---|---|
Rathlev (2016) [50] | Low | Low | Low | Low | High | Unclear | Low | High |
Neven (2016) [49] | Low | Low | Low | Low | High | Low | Low | Mod |
Murphy (2017) [48] | Low | Low | Low | Low | High | Low | Low | Mod |
Ringwalt (2015) [51] | Low | High | Low | Low | High | Low | Low | Mod |