Table 5 Methodological quality summary of interventions and Risk of Bias using the Cochrane Risk of Bias Tool
Trial | Sequence generation | Allocation concealment | Blinding (participants can’t be blinded) | Incomplete outcome data | Selective outcome reporting bias | Contamination | Other bias criteria defined in de Bruin et al. 2015 [42] |
|---|---|---|---|---|---|---|---|
Delamere 2006 [26] | Unclear | Unclear | Unclear | High | Unclear | Unclear | Unclear |
De Tolly 2012 [22] | Low | Low | High | Low | Low | Low | Unclear |
Downing, 2013 [24] | Low | Unclear | High | Low | Low | Low | High |
Gold 2011 [29] | Low | Low | High | Unclear | Low | High | High |
Jones 2013 [21] | Low | Low | High | Low | Low | Low | Low |
Lim et al. 2010 [30] | Low | High | High | Low | Low | Unclear | Low |
Odeny 2012 [25] | Low | Low | High | Low | Low | Low | Unclear |
Odeny 2014 [27] | Low | Low | High | Low | Low | Low | Unclear |
Shahkolahi 2013 [23] | Unclear | Unclear | High | Unclear | Unclear | Unclear | Unclear |
Suffoletto 2013 [28] | Low | Unclear | High | Unclear | High | Low | Low |