Study types and demographic data.
| Study Type | % (n) | Mean No. of Patients with BD | Women, % | Mean Age, Yrs, of Patients with BD |
|---|---|---|---|---|
| Clinical, descriptive | 18.9 (53) | 174.4 | 43.7 | 36.6 |
| Clinical, hypothesis-testing | 6.8 (19) | 59.4 | 38.4 | 35.1 |
| Pure epidemiology | 1.1 (3) | 2.3/5708.6* | 61.8 | 38.4 |
| Epidemiology, other | 3.2 (9) | 144.2 | 42.4 | 37.3 |
| Controlled drug trial | 2.1 (6) | 60.2 | 37.4 | 31.3 |
| Drug use, other | 11.8 (33) | 19.7 | 41.7 | 33 |
| Mainly laboratory | 34.3 (96) | 37.6 | 41.6 | 36 |
| Genetic association | 16.8 (47) | 100 | 43.4 | 39.2 |
| Animal studies | 1.4 (4) | 147 | NA | NA |
| Other | 3.6 (10) | 81.1 | 33.7 | 37.4 |
| Total | 100 (280) | 79.0 | 41.7 | 36.2 |
↵* Mean number of patients with BD identified/mean number of population surveyed. BD: Behçet’s disease; NA: not applicable.