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Table 1 (abstract A28). See text for description

From: Proceedings of the 2019 Childhood Arthritis and Rheumatology Research Alliance (CARRA) Annual Scientific Meeting

Characteristic Frequency (%) or Median (25-75%)
Age at enrollment (years) 12.0 (7.0 – 15.0)
Female 4,760 (71%)
White Race 5,432 (81%)
Private health insurance 4,515 (67%)
Disease duration (years) 2.5 (0.4 – 6.1)
ILAR category:
 Oligoarthritis, persistent 1,634 (24%)
 Oligoarthritis, extended 519 (8%)
 Polyarthritis, RF- 2,184 (33%)
 Polyarthritis, RF+ 472 (7%)
 Psoriatic arthritis 490 (7%)
 Enthesitis related arthritis 687 (10%)
 Systemic arthritis 571 (9%)
 Undifferentiated arthritis 147 (2%)
 ANA+ 3,004 (45%)
 RF+ 556 (8%)
 CCP+ 447 (7%)
 HLA-B27+ 545 (8%)
 Polyarthritis course 4,269 (64%)
 Uveitis, ever 721 (11%)
 Number of active joints 1 (0 – 3)
 Physician global assessment 1 (0 – 3)
 Active enthesitis 469 (7%)
 Clinically active sacroiliitis 237 (4%)
  1. Clinical characteristics at enrollment (N=6,707)