Table 3.
Risk of bias of finally available studies
| 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 | |
|---|---|---|---|---|---|---|---|
| Singla et al.8 | ? | + | − | + | − | + | ? |
| Triches et al.9 | ? | + | + | ? | ? | + | + |
| Bharuka and Mandroli10 | ? | + | − | + | + | + | ? |
| Sevekar and Gowda11 | + | + | + | + | + | ? | + |
+, Low bias; −, High bias; ?, Unclear bias