INS and Insulin resistance: In comparison with sex- and age-matched OW/OB controls (n = 33), OW/OB patients with SJIA had higher insulin resistance [median (IQR) HOMA-IR: 2.6 (2.1–3.3) vs 1.5 (0.8–2.0), p = 0.001], lower insulin sensitivity [median (IQR) WBISI: 3.7 (2.7–5.9) vs 5.4 (4.5–8.7), p = 0.024], and higher insulin secretion [median (IQR) IGI: 2.5 (2.0–3.5) vs 1.0 (0.8–1.9), p = 0.001].