Table 2.

Patient characteristics and disease activity markers of the study cohort

	MRI-inactive patients (juvenile arthritis MRI score 0, n=6)	MRI-active patients (juvenile arthritis MRI score ≥1, n=7)
Age	13.8 (13.6–15.6)	12.2 (10.2–16.8)
Body mass index percentile	23 (12–43)	59 (46–93)
Body mass index z-score	0.215 (0.05–1.46)	−0.74 (−1.18 to −0.17)
Number of females (%)	5 (83%)	4 (57%)
Active joints at physical examination	1 (0.0–2.3)	1 (0.0–4.0)
Joints with limitation of motion at physical examination	1 (0.8–1.0)	1 (0.0–2.0)
Erythrocyte sedimentation rate in mm/h	5 (2.0–7.3)	8 (6.0–22.0)
C-reactive protein in mg/L	0.9 (0.2–2.3)	2.1 (0.0–4.6)
Visual analogue scale physician	4 (0.0–8.8)	15 (8.0–20.0)
Total juvenile arthritis MRI score	0 (0–0)	3 (1–10)