From: Motives for participating in a clinical research trial: a pilot study in Brazil
Type of study | N | Age (average) | Standard deviation | p-value2 |
---|---|---|---|---|
 |  |  |  | < 0.0001 |
Arthritis/osteoarthritis | 24 | 56.7 | 8.4 | Â |
Bioequivalence | 39 | 31.5 | 9.3 | Â |
Insomnia | 10 | 48.2 | 12.4 | Â |
Other1 | 6 | 43.3 | 9.9 | Â |