| Study | Randomization OK | Alloc Concealment | Baseline Similarity | Eligiblity Crit Spec | Patient Blinded | Care Provider Blind | Outcome Assess Blind | Primary Outcome Rep | ITT Analysis |
| Apfelbaum | ? | ? | Y | Y | Y | Y | ? | Y | N |
| Hauner | Y | ? | Y | Y | Y | Y | ? | Y | N |
| James | Y | Y | Y | Y | Y | Y | ? | Y | N |
| Krakua | ? | ? | Y | Y | Y | Y | ? | Y | Y |
| Mathus‐Vliegen | Y | Y | Y | Y | Y | Y | ? | Y | N |
| McNulty | ? | ? | Y | Y | Y | Y | ? | Y | N |
| McMahon 2000 | ? | ? | Y | Y | Y | Y | ? | N | N |
| McMahon 2002 | ? | ? | Y | Y | Y | Y | ? | Y | N |
| Sanchez‐Reyes | ? | ? | Y | Y | Y | Y | ? | Y | N |
| Smith | Y | Y | Y | Y | Y | Y | ? | Y | N |
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