Uveitis associated with juvenile idiopathic arthritis and chronic idiopathic uveitis in children: A retrospective cohort study

Table 1 Comparative analysis of patients with juvenile idiopathic arthritis-associated uveitis and chronic idiopathic uveitis

Parameter	Juvenile idiopathic arthritis-associated uveitis (n = 110)	Chronic idiopathic uveitis (n = 40)	P value
Females	67 (60.9)	17 (42.5)	0.062
Age at diagnosis of uveitis (years)			0.648
Mean	7.2	7.1
Median (25%, 75%)	6.4 (4.4, 9.0)	6.2 (5.2, 9.4)
Min–max	1.8-17.7	1.0-15.0
Age at diagnosis of arthritis (years)
Mean	6.4	-	-
Median (25%, 75%)	5.6 (2.7, 9.3)
Min–max	1.0-16.2
Anatomical type of uveitis			0.023
Anterior	81 (73.6)	20 (50.0)
Pars planitis	4 (3.6)	2 (5.0)
Posterior	4 (3.6)	4 (10.0)
Panuveitis	21 (19.2)	14 (35.0)
Manifested (“red-eye”) uveitis	40 (36.4)	17 (42.5)	0.569
Unilateral uveitis	49 (44.5)	18/39 (46.2)	1.0
Eye complications at first examination	34 (30.9)	12 (30.0)	1.0
Antinuclear antibodies positivity	60/104 (57.7)	20/35 (57.1)	1.0
Human leukocyte antigen-B27-positivity	18/51 (35.3)	5/21 (23.8)	0.413
Uveitis appearance		-	-
Before arthritis	31 (28.2)
Simultaneously with arthritis	19 (17.3)
After arthritis	59 (53.6)
Unknown	1 (0.9)
C-reactive protein (mg/L)			0.035
Mean	24.3	8.8
Median (25%, 75%)	1.50 (1.00, 17.00)	0.98 (0.34, 1.70)
Min-max	0-192.00	0.07-60.00
ESR (mm/hour)	28.0	18.0	0.179
Mean	22.0 (15.0, 47.0)	10.0 (8.0, 21.0)
Median (25%, 75%)	2.0-78.0	4.0-60.0
Min-max
Active joint at onset		-	-
Mean	2.0
Median (25%, 75%)	1.0 (1.0, 2.0)
Min-max	1.0-7.0

Data are presented as n (%). Max: Maximum; Min: Minimum.