Appendix Table A1.
Risk of Bias Summary from Included Randomized Controlled Trials
| AUTHOR(S) (YEAR) | RANDOM SEQUENCE GENERATION | ALLOCATION CONCEALMENT | RESIDUAL CONFOUNDING | BLINDING OF PARTICIPANTS AND PERSONNEL | BLINDING OF OUTCOME ASSESSORS | INCOMPLETE OUTCOME DATA | SELECTIVE REPORTING | OTHER BIASES | OVERALL RISK OF BIAS RATING |
|---|---|---|---|---|---|---|---|---|---|
| Neven et al. (2016) | + | − | − | +A | ? | − | − | + | Low-to-moderate |
| Rathlev et al. (2016) | − | − | − | +A | − | ? | − | + | Low-to-moderate |
| Ringwalt et al. (2015) | − | + | − | +A | − | − | − | + | Low-to-moderate |
Domain-based evaluation adapted from the Cochrane Collaboration risk of bias table.
− = low risk of bias; + = high risk of bias; ? = unclear; A, not possible to blind participants due to nature of intervention.