n | % | |
---|---|---|
Topic | ||
Drug | 667 | 68.3 |
Phase I | 163 | 24.4 |
Phase II | 173 | 25.9 |
Phase III | 226 | 33.9 |
Phase IV | 105 | 15.7 |
Cosmetics and nutrition | 50 | 5.1 |
Physiology | 65 | 6.7 |
Medical equipment & prothesis | 64 | 6.6 |
Surgical and/or diagnostic act | 52 | 5.3 |
Other | 78 | 8.0 |
Design | ||
Descriptive, analytic | 150 | 15.4 |
Experimental, non-randomized | 319 | 32.7 |
Experimental, randomized | 507 | 51.9 |
Scope | ||
National-monocentric | 463 | 47.4 |
National-multicentric | 311 | 31.9 |
International | 161 | 16.5 |
Not available | 41 | 4.2 |
Expected sample size | ||
Fewer than 21 patients | 293 | 30.0 |
21 to 50 patients | 251 | 25.7 |
51 to 150 patients | 192 | 19.7 |
More than 150 patients | 228 | 23.4 |
Not available | 12 | 1.2 |
Expected duration | ||
Less than 2 months | 115 | 11.8 |
2 to 6 months | 159 | 16.3 |
6 to 18 months | 286 | 29.3 |
More than 18 months | 163 | 16.7 |
Not available | 253 | 25.9 |