Characteristics of clinical trials included in the study sample
| Trial characteristics | N=240 n (%) |
| Trials | |
| Late-breakers | 49 (20.4) |
| Not late-breakers | 191 (79.6) |
| Type of study | |
| Interventional | 232 (96.7) |
| Observational | 8 (3.3) |
| Primary purpose | |
| Therapeutic | 178 (74.2) |
| Diagnostic | 14 (5.8) |
| Other | 47 (19.6) |
| Not applicable | 1 (0.4) |
| Design | |
| Superiority | 131 (54.6) |
| Non-inferiority | 11 (4.6) |
| Equivalence | 1 (0.4) |
| Non-comparative | 97 (40.4) |
| Funder | |
| Industry | 89 (37.0) |
| Academia | 33 (13.8) |
| Government | 16 (6.7) |
| Combination (any combination of industry, academia, government and other) | 49 (20.4) |
| Other | 23 (9.6) |
| Unclear | 30 (12.5) |
| Meeting | |
| American Society of Clinical Oncology | 25 (10.4) |
| American Society of Hematology | 25 (10.4) |
| American Heart Association | 25 (10.4) |
| American College of Rheumatology | 25 (10.4) |
| American Diabetes Association | 25 (10.4) |
| Digestive Disease Week | 25 (10.4) |
| American Thoracic Society | 25 (10.4) |
| Radiological Society of North America | 24 (10) |
| American Association for Cancer Research | 23 (9.6) |
| Association for Research in Vision & Ophthalmology | 13 (5.4) |
| American Urological Association | 3 (1.3) |
| American Psychiatric Association | 2 (0.8) |