Tighe 2010‐WO.
| Study characteristics | ||
| Methods | See above | |
| Participants | See above | |
| Interventions | See above | |
| Outcomes | See above | |
| Funding/conflicts of interest | See above | |
| Notes | See above | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | Low risk | See above |
| Allocation concealment (selection bias) | Low risk | See above |
| Blinding of outcome assessment (detection bias) All outcomes | Low risk | See above |
| Incomplete outcome data (attrition bias) All outcomes | High risk | See above |
| Intention to treat analysis | Unclear risk | See above |
| Selective reporting (reporting bias) | Unclear risk | See above |
| Groups comparable at baseline | Unclear risk | See above |
| Other bias | Low risk | See above |