Previous clinical trial experience
| Variable | All responses n=678 | Previous consent for clinical trial and scenario responses complete n=236 | No previous consent for clinical trial and scenario responses complete n=235 |
| Previous consent for clinical trial | n=612 | n=236 | n=235 |
| Yes | 292 (47.7) | 236 (100.0) | 0 (0.0) |
| No | 320 (52.3) | 0 (0.0) | 235 (100.0) |
| Number of times consent given | n=281 | n=227 | |
| 1 | 127 (45.2) | 108 (47.6) | |
| 2–3 | 122 (43.4) | 94 (41.4) | |
| >3 | 32 (11.4) | 25 (11.0) | |
| Amount of consent form read | n=288 | n=235 | |
| <50% | 33 (11.5) | 22 (9.4) | |
| >50% but <100% | 57 (19.8) | 48 (20.4) | |
| 100% | 159 (55.2) | 136 (57.9) | |
| Unsure | 39 (13.5) | 29 (12.3) | |
| Amount of information in consent form | n=268 | n=219 | |
| Too little | 5 (1.9) | 3 (1.4) | |
| Just right | 182 (67.9) | 145 (66.2) | |
| Too much | 81 (30.2) | 71 (32.4) | |
| Reason for participating | n=287 | n=233 | |
| Altruism | 166 (57.8) | 135 (57.9) | |
| Personal benefit | 49 (17.1) | 37 (15.9) | |
| Financial | 27 (9.4) | 23 (9.9) | |
| Other | 45 (15.7) | 38 (16.3) |