Initial documentation. Uveitis characteristics | Group I. Uveitis, ANA-positive, no JIA, N = 62 | Group II. Uveitis manifestation after JIA disease onset*, N = 668 | Group III. Uveitis manifestation before JIA disease onset*, N = 61 | p value†| Significant pairwise comparisons‡ | ||||||
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 | N (%) | Mean | SD | N (%) | Mean | SD | N (%) | Mean | SD |  |  |
Anterior uveitis, n (%) | 62 (100) | n.a. | n.a. | 546 (94.0) | n.a. | n.a. | 40 (80.0) | n.a. | n.a. | < 0.001 | I vs. II, I II vs. III |
Insidious onset of flare, n (%) | 25 (50.0) | n.a. | n.a. | 363 (70.9) | n.a. | n.a. | 23 (56.1) | n.a. | n.a. | 0.002 | I vs. II |
Bilateral uveitis, n (%), data provided in 599 cases | 33 (67.3) | n.a. | n.a. | 241 (48.9) | n.a. | n.a. | 28 (59.6) | n.a. | n.a. | 0.015 | I vs. II |
Active uveitis (AC cell grade ≥ 1+); n (%) | 26 (66.7) | n.a. | n.a. | 191 (53.8) | n.a. | n.a. | 13 (61.9) | n.a. | n.a. | 0.316 | – |
Visual acuity in uveitis eyes, logMAR | 74 | 0.35 | 0.36 | 701 | 0.23 | 0.37 | 59 | 0.38 | 0.47 | 0.020 | – |
Worse eyes, logMAR | 61 | 0.44 | 0.49 | 612 | 0.28 | 0.42 | 55 | 0.42 | 0.55 | 0.038 | I vs. II |