Table 1 Demographics of the study population
From: ASAS definition for sacroiliitis on MRI in SpA: applicable to children?
Patients with JSpA | Patients without JSpA | |||
|---|---|---|---|---|
(N = 47) | (N = 62) | |||
N (%) | N (%) | |||
MRI + | MRI – | MRI + | MRI – | |
(N = 23) | (N = 24) | (N = 7) | (N = 55) | |
N (%) | N (%) | N(%) | N (%) | |
Age (years) | 10.8–18 (mean 15.0) | 7.7–17.1 (mean 12.6) | 12.7–18,8 (mean 15.1) | 6.8–18 (mean13.1) |
Male | 13 (57%) | 12 (50%) | 1 (14%) | 15 (27%) |
HLA-B27 + | 13 (27%) (0 ND) | 8 (33%) (2 ND) | 2 (29%) (1 ND) | 8 (15%) (25 ND) |
Inflammatory back pain | 20 (87%) | 18 (75%) | 7 (100%) | 50 (91%) |
Sacroiliac joint tenderness | 13(57%) | 13 (54%) | 3 (43%) | 16 (29%) |
IBP AND sacroiliac joint tenderness | 10 (43%) | 7 (29%) | 3 (43%) | 11 (20%) |
Arthritis (peripheral) | 13 (57%) | 16 (67%) | 0 (0%) | 13 (24%) |
Enthesitis (peripheral) | 14 (61%) | 15 (63%) | 1 (14%) | 5 (9%) |