Table 2 Registered trials confirmed as using qualitative methods by type of intervention by registry
Type of trial intervention | WHO ICTRP | ClinicaTrial.gov | ISRCTN | Total |
|---|---|---|---|---|
Other | 75 (76.5%) | 335 (38.2%) | 289 (56.0%) | 699 (46.9%) |
Behavioural | 20 (20.4%) | 419 (47.7%) | 147 (28.5%) | 586 (39.3%) |
Drug | 2 (2%) | 43 (4.9%) | 37 (7.2%) | 82 (5.5%) |
Medical device | 1 (1%) | 54 (6.2%) | 14 (2.7%) | 69 (4.6%) |
Surgical | 0 (0%) | 27 (3.1%) | 29 (5.6%) | 56 (3.8%) |