Table 3.
Risk for Bias Assessment
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Random Sequence Generation | Allocation Concealment | Blinding of Participants | Blinding of Care Providers | Blinding of Outcome Assessor | Incomplete Outcome Data | Selective Reporting | Group Similarity at Baseline | Co‐interventions | Compliance | Intention‐to‐Treat Analysis | Timing of Outcome Assessment | |
| McDonough et al. (2013)25 | Y | Y | N | N | N | Y | Y | Y | U | Y | Y | Y |
| Lamb et al. (2010)21 | Y | Y | N | N | N | Y | Y | Y | U | Y | Y | Y |
| Johnson et al. (2007)18 | Y | N | N | N | N | Y | Y | Y | U | N | Y | Y |
| Walti et al. (2015) | Y | Y | U | N | N | Y | Y | N | N | N | N | Y |
| Vibe Fersum et al. (2013)28 | Y | Y | N | N | N | N | Y | N | N | Y | N | Y |
| Macedo et al. (2012)24 | Y | Y | N | N | N | Y | Y | Y | U | Y | Y | Y |
| van der Roer et al. (2008)26 | Y | Y | N | N | N | Y | Y | Y | Y | U | Y | Y |
Y, yes, criteria fulfilled; N, no, criteria not fulfilled, U, unclear.