Table 2.
Investigator characteristics and clinical trial experience
| Characteristics | Respondents (N = 732) |
|---|---|
| n (%) | |
| Primary appointment | |
| University or academic teaching hospital | 684(93) |
| Non-academic community-based hospital | 27(4) |
| Other (e.g. private practice, cancer centre, pharmaceutical) | 21(3) |
| Type of clinical trial | |
| Non-industry trials only | 240(33) |
| Industry trials only | 54(7) |
| Both non-industry and industry trials | 406(55) |
| None | 28(4) |
| Did not answer | 4(1) |
| Number of years of experience in clinical trials | |
| ≤ 5 | 192(26) |
| > 5 | 489(67) |
| Not applicable | 28(4) |
| Did not answer | 23(3) |
| Most senior role in clinical trial | |
| Principal investigator for entire trial -(trial PI) | 466(64) |
| Principal investigator for site, No overall PI experience- (site PI) | 177(24) |
| Other (No PI or site-PI experience) | 56(8) |
| Did not answer | 33(5) |
| Intervention(s) studied * | |
| Drug therapy | 552(75) |
| Device/equipment | 217(30) |
| Diagnostic tests | 174(24) |
| Surgery/procedure | 151(21) |
| Education/counselling | 139(19) |
| Management policy (e.g. specific thresholds for transfusion) | 89(12) |
| Complementary and alternative medicine | 78(11) |
| Psychotherapy | 37(5) |
| Other (e.g. exercise, nutrition, radiation) | 113(15) |
| Trial sites | |
| Single | 94(13) |
| Multiple | 252(34) |
| Both (single and multiple) | 353(48) |
| Did not answer | 33(5) |
| Conflict of interest exposure | |
| Any | 269(37) |
| Personal only | 33(5) |
| Witness of colleague | 184(25) |
| Both personal and witness of colleague | 52(7) |
| None | 402(55) |
| Did not answer | 61(8) |
Note:
* The sum of response options is greater than 100% because survey respondents may have investigated more than one intervention type in different trials.