Table 1. Demographic data of patients with JIA.
| JIA n = 2636 | JRA n = 1520 | ERA n = 1033 | PsA n = 83 | |
| % | 100% | 57.7% | 39.2% | 3.2% |
| Male-female ratio | 1.69∶1 | 1.17∶1 | 3.3∶1 | 1.02∶1 |
| Diagnosis age (yr) (min-max) | 11.5±3.7 (0.6–15.99) | 10.2±3.9 (0.6–15.97) | 13.4±2.3 (3.6–15.99) | 11.9±3.8 (1.4–15.96) |
| Male | 11.7±3.6a | 10.0±3.8 | 13.5±2.3 | 11.5±4.1 |
| Female | 11.2±3.9a | 10.4±4.0 | 13.3±2.5 | 12.4±3.4 |
| Follow-up duration (yr) (min-max) | 3.5±3.5 (0.02–14.8) | 3.5±3.7 (0.03–14.8) | 3.6±3.3 (0.02–14.6) | 2.6±3.0 0.02–10.6) |
| Male | 3.8±3.6b | 3.7±3.8c | 3.8±3.4d | 2.7±3.3 |
| Female | 3.1±3.4b | 3.2±3.5c | 2.7±3.0d | 2.4±2.6 |
| uveitis | 125/2636 (4.7%) | 44/1520 (2.9%) | 81/1033 (7.8%) | 0 |
| Male | 87/1656 (5.3%) | 21/822 (2.6%) | 66/793 (8.3%) | 0 |
| Female | 38/980 (3.9%) | 23/699 (3.3%) | 15/240 (6.3%) | 0 |
| cataract | 14/125 (11.1%) | 9/44 (20.5%) | 5/81 (6.2%) | 0 |
| Male | 4/87 (4.6%) | 1/21 (4.8%) | 3/66 (4.6%) | 0 |
| Female | 10/38 (26.3%) | 8/23 (34.8%) | 2/15 (13.3%) | 0 |
| glaucoma | 31/125 (24.8%) | 10/44 (22.7%) | 21/81 (25.9%) | 0 |
| Male | 21/87 (24.1%) | 2/21 (9.5%) | 19/66 (28.8%) | 0 |
| Female | 10/38 (26.3%) | 8/23 (34.8%) | 2/15 (13.3%) | 0 |
| Blindness and low vision | 0 | 0 | 0 | 0 |
a
p = 0.001, b p<0.0001, c p = 0.01, and d p<0.0001 compared male and female patients, by student's t test.
Abbreviations: JIA, juvenile idiopathic arthritis; JRA, juvenile rheumatoid arthritis; ERA, enthesitis-related arthritis; PsA, and psoriatic arthritis.