Corticosteroid injections | | | |
Number | 82/141 (58%) | 59/141 (42%) | |
Age at injection, yrs | 6.1 ± 2.3 | 5.9 ± 2.1 | 0.66* |
Age at JIA onset, yrs, median (IQR) | 2.5 (1.7–4.6) | 3.9 (1.7–5.7) | 0.11* |
Time interval since JIA onset, yrs, median (IQR) | 2.4 (0.9–4.3) | 1.2 (0.6–3.2) | 0.02* |
Intraarticular amount of corticosteroid, grades 0–3 | 2.0 ± 0.84 | 0 | < 0.0001** |
Injected corticosteroid dose, mg | 10.8 ± 5.9 | 10.8 ± 6.5 | 0.52** |
Intraarticular dose index, mg | 7.2 ± 4.9 | 0 | < 0.0001** |
Previous CSI | | | |
Frequency | 57/82 (69%) | 26/59 (44%) | 0.005*** |
Number | 1.4 ± 1.3 | 0.8 ± 1.1 | 0.005** |
Intraarticular dose index, mg | 4.4 ± 6.7 | 1.1 ± 2.6 | 0.0001** |
Time interval between CSI, days, median (IQR) | 189 (81–502) | 140 (77–287) | 0.11* |
TMJ deformity at CSI, grades 0–3 | 1.1 ± 1.0 | 0.9 ± 0.8 | 0.34** |
TMJ inflammation, grades 0–3 | | | |
Before CSI | 1.56 ± 0.72 | 1.36 ± 0.61 | 0.09** |
At first followup MRI | 0.95 ± 1.08 | 1.19 ± 0.71 | 0.046** |
Improvement of inflammatory grade | 53% of CSI, 0.61 ± 0.91 | 20% of CSI, 0.17 ± 0.56 | 0.0002***, 0.001** |
Growth rate, mm/y, median (IQR) | | | |
Up to first followup MRI | −1.0 (−4.5–2.6) | 0.8 (−2.1–3.9) | 0.036* |
Up to second followup MRI | −0.5 (−1.7–0.6) | 0.5 (−0.1–1.6) | 0.021* |