Table 2 Risk of bias in studies
Study | Random sequence generation | Allocation concealment | Blinding | Incomplete data outcome addressed |
|---|---|---|---|---|
Nicolosi et al. 2014 | N/A | N/A | N/A | N/A |
Segers et al. 2006 | Low risk | Low risk | Low risk | Low risk |
Houston et al. 2002 | High risk | Unclear | Unclear | Low risk |
DeRiso et al. 1996 | Low risk | Low risk | Low risk | Low risk |