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Quality measures of randomised controlled trials that failed to fulfil any one of the markers of validity
| Trials | Concealment of randomisation | Trial stopped early | Patients blinded | Healthcare providers blinded | Data collectors blinded | Outcome assessors blinded |
|---|---|---|---|---|---|---|
| Liu19 | No | No | Yes | Yes | Yes | Yes |
| Stone22 | Yes | No | No | Yes | Yes | Yes |
| Poldermans33 | Yes | Yes | No | No | No | Yes |
| Zaugg35 | Yes | No | No | No | Yes | Yes |
| Urban36 | Yes | Yes | No | No, except anaesthesiologists | Yes | Yes |
