| Methods |
See Skowron 1966a and Skowron 1966b
|
| Participants |
See Skowron 1966a and Skowron 1966b
|
| Interventions |
See Skowron 1966a and Skowron 1966b
|
| Outcomes |
See Skowron 1966a and Skowron 1966b
|
| Notes |
See Skowron 1966a and Skowron 1966b
|
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Random sequence generation (selection bias) |
Unclear risk |
See Skowron 1966a and Skowron 1966b
|
| Allocation concealment (selection bias) |
Unclear risk |
See Skowron 1966a and Skowron 1966b
|
| Blinding of participants and personnel (performance bias)
All outcomes |
Low risk |
See Skowron 1966a and Skowron 1966b
|
| Blinding of outcome assessment (detection bias)
All outcomes |
Low risk |
See Skowron 1966a and Skowron 1966b
|
| Incomplete outcome data (attrition bias)
All outcomes |
Low risk |
See Skowron 1966a and Skowron 1966b
|
| Selective reporting (reporting bias) |
Unclear risk |
See Skowron 1966a and Skowron 1966b
|
| Other bias |
Unclear risk |
See Skowron 1966a and Skowron 1966b
|
| Overall risk of bias
All outcomes |
Unclear risk |
See Skowron 1966a and Skowron 1966b
|
