Consistency of reporting between conference, press release and publication abstracts for the clinical trials included in the study sample
| Characteristics | Consistency, no. (%) |
| Primary efficacy endpoint definition | |
| Conference abstract versus trial registration | 187/208 (89.9) |
| Publication abstract versus trial registration | 160/171 (93.6) |
| Conference abstract versus publication abstract | 171/177 (96.6) |
| Conference abstract versus trial registration versus publication abstract | 152/171 (88.9) |
| Safety endpoint identification | |
| Conference abstract versus publication abstract | 96/128 (75.0) |
| Sample size | |
| Conference abstract versus publication abstract | 107/172 (62.2) |
| Follow-up period | |
| Conference abstract versus publication abstract | 101/137 (73.7) |
| Effect size | |
| Conference abstract versus publication abstract | 92/175 (52.6) |
| Results characterisation | |
| Conference abstract versus publication abstract | 157/175 (89.7) |
| Conference abstract versus press release versus publication abstract | 32/32 (100) |