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| Scored items | Hsieh 2002 |
| Randomisation performed | Yes, method not stated |
| Allocation concealment | Unclear |
| Blinding of care providers | Unclear |
| Blinding of participants | No |
| Blinding of outcome assessors | Yes |
| Intention‐to‐treat analysis | Yes |
| Completeness of follow‐up | None lost to follow‐up |
