Table 3.
Presentation of risk of bias for randomised controlled trials (RCTs) in the review.
| Random sequence generation (selection bias) | Allocation concealment (selection bias) | Blinding of participants & personnel (performance bias & detection bias) | Blinding of outcome assessment (performance bias & detection bias) | Incomplete outcome data (attrition bias) | Selective reporting (reporting bias) | |
|---|---|---|---|---|---|---|
| Sanford et al. [17] | + | + | − | − | + | ? |
| Parker et al. [20] | + | + | − | + | + | + |
| Stasiak et al. [21] | + | + | + | ? | + | + |
| Beardslee et al. [26] | + | ? | − | ? | + | ? |
| Beardslee et al. [27] | + | ? | − | ? | + | ? |
| Beardslee et al. [29] | + | ? | − | ? | + | ? |
| Solantaus et al. [30] | + | ? | − | ? | + | ? |
| Barnet et al. [33] | ? | ? | − | ? | + | ? |
Key: +: low risk of bias; −: high risk of bias; ?: unclear risk of bias.