Table 3

 Demographic and clinical characteristics of young adults with juvenile idiopathic arthritis with or without asymptomatic or acute uveitis

VariableHistory of asymptomatic uveitisNo history of asymptomatic uveitisp ValueHistory of acute uveitis*
*The acute uveitis group was too small for statistical comparison.
Number of patients19986
Female (n (%))16 (84)71 (72)0.392 (33)
Age at onset of arthritis (years) (mean (SD))4.3 (3.4)7.7 (4.4)0.00210 (4.1)
Diagnosis (course type) (n (%))0.33
Oligoarthritis10 (53)63 (64)5 (83)
Extended oligoarthritis5 (26)9 (9)1 (17)
Polyarthritis, RF negative2 (11)21 (21)0 (0)
Polyarthritis, RF positive2 (11)2 (2)0 (0)
Psoriatic arthritis0 (0)1 (1)0 (0)
Enthesitis related arthritis0 (0)0 (0)0 (0)
Systemic onset arthritis0 (0)2 (2)0 (0)
HLA B27 positive (n (%))7 (37)28 (27)0.476 (100)
ANA positive (n (%))7 (37)20 (20)0.140 (0)
Interval from diagnosis of arthritis to re-evaluation (years) (mean (range))19.3 (13 to 23)15.5 (6 to 23)<0.00115.3 (9 to 23)
Age at re-evaluation (years) (mean (range))23.7 (22 to 26)23.6 (21 to 26)0.3123.2 (22 to 25)