Reasons for awaiting classification
| Reasons for awaiting classification (n=89), after author request with or without response | |
| Reporting-related reasons* | |
| Statement on ethics approval insufficient or not reported | 12† |
| EC insufficient or not reported | 37† |
| EN not reported | 62† |
| IC unclear or not reported | 14 |
| RI-related reasons | |
| EC reported, but national recognition unclear | 17 |
| EC not found in source | 14 |
| No source available | 3 |
*Some RCTs have more than one reason for ‘awaiting classification’; therefore, the sum of all reasons exceeds the total number of RCTs in ‘awaiting classification’.
†Including five RCTs available as registration records only.
EC, ethics committee; EN, ethics approval number; IC, informed consent; RCTs, randomised controlled trials; RI, research integrity.