Juvenile Spondyloarthritis: focus on uveitis

Table 1 General cohort characteristics

	All JSpA (N = 223)	ERA (N = 138)	PsA (N = 41)	UA (N = 30)	IBD-A (N = 14)	p-value*
Males	111/223 (50%)	81/138 (59%)	8/41 (20%)	16/30 (53%)	6/14 (43%)	0.000
HLA-B27+ **	75/200 (38%)	61/132 (46%)	4/34 (12%)	9/26 (35%)	1/8 (12%)	0.001
Uveitis	24/223 (11%)	18/138 (13%)	3/41 (7%)	2/30 (7%)	1/8 (7%)	0.735
HLA-B27+ U †	10/22 (45%)	8/18 (44%)	0/2 (0%)	1/1 (100%)	1/1 (100%)	0.330
Symptomatic-U	19/24 (79%)	15/18 (83%)	2/3 (67%)	1/2 (50%)	1/1 (100%)	0.438

ERA Enthesitis-related arthritis, PsA psoriatic juvenile idiopathic arthritis, UA undifferentiated juvenile idiopathic arthritis, IBD-A arthropathies associated with inflammatory bowel disease, JSpA juvenile spondyloarthritis, N number of patients. HLA-B27 + -U HLA-B27 + -Uveitis. Symptomatic-U Symptomatic-Uveitis. * p value for Fischer’s exact test comparing distribution between JSpA subcohorts. **HLA-B27 status not available for 23 subjects – 6 ERA, 7 PsA, 4 UA, and 6 IBD-A. †Denominator is number of uveitis patients with HLA-B27 status known

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