Conference and publication abstract results characterisation for the clinical trials included in the study sample
| Abstracts | Characterisation, no. (%) | ||
| Positive | Negative | Neutral* | |
| Conference abstract | 197/238 (82.8) | 33/238 (13.9) | 8/238 (3.4) |
| Publication abstract | 143/177 (80.8) | 26/177 (14.7) | 8/177 (4.5) |
*Trials were classified as ‘neutral’ if the primary endpoint was characterised negatively and the secondary endpoint was characterised positively.