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Table 1 Characteristics of patients with JIA and controls

From: Measurement properties and performance of an eight-minute submaximal treadmill test in patients with juvenile idiopathic arthritis: a controlled study

  Patients with JIA validity sample (n = 59) Patients with JIA reliability sample (n = 37) Controls validity sample (n = 59)
Age (yrs) 13.6 (2.2) 13.6 (2.1) 13.5 (2.6)
Female sex, n (%) 50 (85) 30 (81) 50 (85)
Height (cm) 157.6 (12.5) 158.5 (13.0) 160.8 (12.3)
Weight (kg) 48.3 (11.8) 49.5 (12.7) 53.1 (15.2)
BMI (kg/m2) 19.2 (3.0) 19.4 (3.3) 20.1 (3.5)
Waist circumference (cm) 70.5 (9.8) 70.2 (8.9) 69.3 (9.2)
Pubertal status (pre-, mid-, and postpubertal %) 24/61/15 22/65/13 17/68/15
NRS current pain (0–10), n (%) score > 0 23 (38) 16 (43) 18 (30)
NRS pain previous week (0–10) 1.0 (0.0–3.0) 1.0 (1.0–3.5) 1.0 (0.0–3.0)
NRS fatigue previous week (0–10) 3 (2.0–6.0) 3.0 (2.0–6.0) 3.0 (1.0–5.0)
Oligo/poly, n (%) 30 (51) / 29 (49) 18 (49) / 19 (51) NA
Disease duration (yrs) 7.5 (3.8) 7.5 (3.9) NA
JADAS 71 (0–101) 3.2 (1.1–4.8) 3.0 (1.0–4.7) NA
CHAQ score (0–3) 0.0 (0.0–0.3) 0.1 (0.0–0.4) NA
Off medication, n (%) 12 (20) 9 (24) NA
Synthetic DMARDs, n (%) 39 (66) 24 (65) NA
Biologic DMARDs, n (%) 25 (42) 15 (41) NA
Active disease, n (%) 20 (34) 12 (32) NA
Inactive disease, n (%) 39 (66) 25 (68) NA
  1. Numbers are mean (SD) or median (25th – 75th percentile) unless otherwise indicated. JIA juvenile idiopathic arthritis, BMI body mass index, NRS numeric rating scale, JADAS juvenile arthritis disease activity score, CHAQ childhood health assessment questionnaire, DMARDs disease modifying anti-rheumatic drugs, NA not applicable