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Table 1 Description of patient characteristics stratified by JIA subtype at index date

From: Real-world data reveals the complexity of disease modifying anti-rheumatic drug treatment patterns in juvenile idiopathic arthritis: an observational study

  Persistent oligoarticular JIA (n = 78) Extended oligoarticular JIA (n = 56) Polyarticular JIA RF-(n = 103) Polyarticular JIA RF + (n = 26) ERA (n = 62) Overall (n = 325)
Gender
 Female 48 (61.5%) 35 (62.5%) 70 (68.0%) 23 (88.5%) 24 (38.7%) 200 (61.5%)
Age (years)
 Median [IQR] 8.2 [4.7, 12] 6.3 [3.6, 11] 10.5 [5.6, 14] 13.4 [10, 15] 12 [10, 15] 10.3 [5.8, 14]
Observation time (years)
 Median [IQR] 3.3 [2.4, 5.7] 4.9 [2.8, 6.6] 3.7 [2.6, 6.1] 3.2 [2.5, 4.3] 3.7 [2.3, 5.1] 3.7 [2.5, 5.8]
Presence of uveitis
 Yes n (%) 7 (9%) 9 (16.1%) 9 (8.7%)  < 5 (< 19.2%)  < 5 (< 8.1%) 30 (9.2%)
  1. JIA Juvenile idiopathic arthritis, RF Rheumatoid factor negative, RF Rheumatoid factor positive, ERA Enthesis-related arthritis, IQR Interquartile range