Table 1 Characteristics of participants with juvenile idiopathic arthritis (JIA) in relation to temporomandibular disorder (TMD)
Bergen cohort n = 72 | TMD* n = 46 | No TMD n = 26 | p-value** | |
|---|---|---|---|---|
Girls, n (%) | 32.0 (44.4) | 21.0 (29.2) | 11.0 (15.3) | 0.784 |
Age at JIA onset, median (IQR) | 7.0 (7.6, 3.0–10.7) | 7.5 (7.3, 3.3–10.6) | 6.6 (8.5, 2.6–11.1) | 0.759 |
Age at clinical investigation, median (IQR) | 13.1 (4.9, 10.2–15.1) | 12.9 (4.3, 10.6–14.9) | 13.6 (7.6, 7.8–15.4) | 0.721 |
Disease duration, median (IQR) | 4.5 (5.5, 2.2–7.7) | 4.6 (5.5, 2.2–7.7) | 4.1 (5.8, 2.1–8.0) | 0.979 |
JIA categories, n (%) | ||||
Oligoarthritis persistent | 31.0 (43.7) | 19.0 (39.1) | 12.0 (52.0) | 0.837 |
Oligoarthritis extended | 6.0 (8.5) | 3.0 (6.5) | 3.0 (12.0) | |
Systemic arthritis | 1.0 (1.4) | 1.0 (2.2) | 0.0 (0) | |
RF-negative polyarthritis | 14.0 (18.3) | 9.0 (19.6) | 5.0 (16.0) | |
Psoriatic arthritis | 2 (2.8) | 1.0 (2.2) | 1.0 (4.0) | |
Enthesitis-related arthritis | 7.0 (9.9) | 6.0 (13.0) | 1.0 (4) | |
Undifferentiated JIA | 11.0 (15.5) | 7.0 (17.4) | 4.0 (12.0) | |