Disease profile of patients on hydroxychloroquine
| Disease | Female | Male |
| Rheumatoid arthritis | 489 | 97 |
| Systemic lupus erythematosus | 118 | 5 |
| Mixed connective tissue disease | 27 | 5 |
| Seronegative polyarthritis | 25 | 2 |
| Juvenile chronic arthritis | 6 | 3 |
| Adult Still’s disease | 0 | 2 |
| Discoid lupus erythematosus | 25 | 11 |
| Sarcoid | 2 | 0 |
| Benign vasculitis | 0 | 1 |
| Sjogren syndrome | 1 | 1 |
| Psoriatic arthropathy | 0 | 1 |
| Not recorded | 15 | 5 |