Table 1 Demographic and clinical information of overall hydroxychloroquine (HCQ) users and long-term (≥ 5 years) users.
Characteristics | Overall users (n = 32,732) | Long-term users (n = 15,477) |
|---|---|---|
Age, mean (years) | 47.4 ± 15.0 | 45.6 ± 14.4 |
< 30 | 4296 (13.1%) | 2277 (14.7%) |
30–39 | 5224 (16.0%) | 2741 (17.7%) |
40–49 | 7760 (23.7%) | 3945 (25.5%) |
50–59 | 8871 (27.1%) | 4015 (25.9%) |
≥ 60 | 6581 (20.1%) | 2499 (16.1%) |
Sex | ||
Male:female | 6742:25,990 (20.6%:79.4%) | 2183:13,294 (14.1%:85.9%) |
Residence | ||
Metropolitan area/large cities:small cities/rural | 16,610:16,122 (50.8%:49.3%) | 7442:8035 (48.1%:51.9%) |
Medical specialties prescribing HCQ | ||
Rheumatology | 19,213 (58.7%) | 9299 (60.1%) |
Dermatology | 1165 (3.6%) | 336 (2.2%) |
Internal medicine other than rheumatology | 9183 (28.1%) | 4403 (28.5%) |
Others | 3171 (9.7%) | 1439 (9.3%) |
Hospitals of prescription | ||
Primary:referral centers | 7325:25,407 (22.4%:77.6%) | 2801:12,676 (18.1%:81.9%) |
Medical indications for HCQ use | ||
SLE:RA:others | 5862:21,264:5606 (17.9%:65.0%:17.1%) | 3417:9319:2741 (22.1%:60.2%:17.7%) |
Mean duration (months) | 29.5 ± 20.0 | 93.0 ± 21.2 |
Daily dose, mean (mg) | 250.1 ± 80.9 | 257.6 ± 75.7 |
< 200: 200–299: ≥ 300 | 6713:15,962:10,057 (20.5:48.8:30.7%) | 3464:7380:4633 (22.4:47.7:29.9%) |
