Table 2 HLA-B27, sex distribution, and other characteristics of 151 Finnish patients with JIA during 18 years after disease onset
HLA-B27 positive | HLA-B27 negative | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|
Female | Male | Total | Female | Male | Total | Female | Male | Total | |
n (%) | 19 (51) | 18 (49) | 37 | 74 (65) | 40 (35) | 114 | 93 (62) | 58 (38) | 151 |
Median (mean) age at onset | 6.2 (7.0) | 10.1 (8.9) | 9.0 (7.9) | 3.0 (5.6) | 5.2 (5.9) | 5.0 (5.7) | 4.7 (5.9) | 6.4 (6.8) | 5.2 (6.3) |
Median number of cumulative joints (IQR) | 6 (5) | 4 (4) | 5 (5) | 7 (8) | 6 (9) | 6 (9) | 6 (8) | 5 (9) | 6 (8) |
TMJ involvement | 5 | 2 | 7 (19%) | 22 | 10 | 32 (28%) | 27 | 12 | 39 (26%) |
Cervical spine affected | 0 | 0 | 0 (0%) | 7 | 6 | 13 (11%) | 7 | 6 | 13 (9%) |
Hip joint affected | 1 | 6 | 7 (19%) | 17 | 7 | 24 (21%) | 18 | 13 | 31 (21%) |
Sacroiliitis on imagining | 2 | 5 | 7 (19%) | 1 | 2 | 3 (3%) | 3 | 7 | 10 (7%) |
Enthesitis 8–18 years | 3 | 7 | 10 (27%) | 1 | 1 | 2 (2%) | 4 | 8 | 12 (8%) |
Dactylitis | 1 | 1 | 2 (5%) | 7 | 3 | 10 (9%) | 8 | 4 | 12 (8%) |
Acute uveitis | 1 | 3 | 4 (11%) | 0 | 0 | 0 (0%) | 1 | 3 | 4 (3%) |
Chronic uveitis | 6 | 5 | 11 (30%) | 23 | 10 | 33 (29%) | 29 | 15 | 44 (29%) |