Table 3 Demographic and baseline characteristics of the 76 patients
Demographic characteristics | |
 Female, n (%) | 48 (63.2) |
 Age at disease onset (yrs), median (IQR) | 10.3 (8.4–12.1) |
 Disease duration at diagnosis (months), median (IQR) | 6.3 (2.3–16.9) |
Baseline features | |
 Fever (Temperature ≥ 38 °C), n (%) | 8 (10.5) |
 Pain, n (%) | 75 (98.7) |
 Functional impairment, n (%) | 33 (43.4) |
 VAS, median (IQR) | 5 (4–6) |
 PGA, median (IQR) | 2.0 (1.5–3.0) |
Extra-osseous involvement, n (%) | |
 Mucocutaneous (psoriasis, acne, pustolosis) | 16 (21.1) |
 Joints (arthritis, sacroiliitis) | 9 (11.8) |
 Gastrointestinal (IBDs, Irritable Bowel Syndrome) | 6 (7.9) |
 Psychiatric/psychological disorders | 10 (13.2) |
  ESR > 15 mm/h, n (%) | 40 (52.6) |
  CRP ≥0.5 mg/dl, n (%) | 41 (54.0) |
  Number of affected bone units on MRI at T0, median (IQR) | 6 (3–9) |
  RAI-CROMRIS, median (IQR) | 14 (8–24) |
  Vertebral involvement on MRI, n (%) | 22 (29.0) |
Follow-up at 6 and 12 months | |
 Number of patients, n (%) | 46 (60.5) |