Table 3.
Methodological quality of RCT studies included in the review.
| Author | Selection bias |
Performance bias |
Detection bias |
Attrition bias |
Reporting bias |
Other bias |
Risk of bias |
|
|---|---|---|---|---|---|---|---|---|
| Random sequence generation | Allocation concealment | Blinding of participants and personnel | Blinding of outcome assessment | Incomplete outcome data | Selective outcome reporting | Other sources of bias | Overall risk of bias | |
| Bryant et al.25 | High risk | High risk | Unclear | Low risk | High risk | Low risk | Unclear | High |
| Hanlon et al.26 | Low risk | Unclear | High risk | Low risk | Low risk | Low risk | High risk | High |
| Raebel et al.29 | Low risk | Unclear | Low risk | Unclear | Low risk | Low risk | Unclear | Unclear |
| Taylor et al.27 | Unclear | Unclear | Unclear | Unclear | Low risk | Low risk | High risk | High |
RCT: randomised control trial.