Table 2.
Risk of bias assessment of the included studies using the Cochrane risk of bias tool
|
Bias |
Random sequence generation (selection bias) | Allocation concealment (selection bias) | Blinding of participants and personnel (performance bias) | Blinding of outcome assessment (detection bias) | Incomplete outcome data (attrition bias) | Selective reporting (reporting bias) | Other bias |
|---|---|---|---|---|---|---|---|
| Author, year | |||||||
| Esmer et al. 2010
[24] |
Low riska |
Unclear |
High risk |
High risk |
High risk |
Low risk |
Low risk |
| Morone et al. 2008
[25] |
Low risk |
Low risk |
Unclear |
Unclear |
Low risk |
Low risk |
Low risk |
| Morone et al. 2009 [26] | Low risk | Low risk | Low risk | Low risk | High risk | Low risk | Low risk |
aAdditional details provided upon request.