Table 1 Distribution of characteristics among children with JIA and controls at both visits
Variable | Children—First Visit | Children—Two-Year Follow-up | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
JIA | Controls | JIA | Controls | |||||||
% | (n/N) | % | (n/N) | p-valuea | % | (n/N) | % | (n/N) | p-valuea | |
Median age at visit, years (IQR) | 7.6 | (6.7–8.9) | 7.8 | (6.8–9.1) | 9.7 | (8.6–10.9) | 9.8 | (8.9–11.0) | ||
Female gender | 70.2 | (33/47) | 75.9 | (41/54) | ||||||
Toothbrushing, twice a day or more | 68.1 | (32/47) | 75.9 | (41/54) | 0.380 | 71.7 | (33/46) | 82.7 | (43/52) | 0.195 |
Tooth flossing, several times a week or more | 10.6 | (5/47) | 11.3 | (6/53) | 1.000 | 17.8 | (8/46) | 11.8 | (6/51) | 0.431 |
Gingival bleeding during toothbrushing, sometimes or more | 43.5 | (20/46) | 33.3 | (18/54) | 0.298 | 50.0 | (23/46) | 33.3 | (17/51) | 0.096 |
Pain or discomfort during toothbrushing | 6.4 | (3/47) | 1.9 | (1/54) | 0.336 | 8.7 | (4/46) | 0 | (0/51) | 0.047 |
Ulcerations, several times yearly or more | 31.1 | (14/45) | 13.0 | (7/54) | 0.028 | 32.6 | (15/46) | 16.0 | (8/50) | 0.057 |
Orofacial pain ever | 27.7 | (13/47) | 11.1 | (6/54) | 0.034 | 31.9 | (15/47) | 5.6 | (3/54) | 0.001 |
Orofacial pain last 30 days | 14.9 | (7/47) | 1.9 | (1/54) | 0.024 | 21.3 | (10/47) | 3.7 | (2/54) | 0.011 |
Caries, d1-5f/D1-5F-level > 0 | 26.1 | (12/46) | 27.8 | (15/54) | 0.849 | 37.0 | (17/46) | 33.3 | (18/54) | 0.243 |
JIA disease characteristics | ||||||||||
Median age at disease onset, years (IQR) | 2.4 | (1.8–4.8) | ||||||||
Disease duration, median years (IQR) | 4.5 | (3.1–5.9) | 6.5 | (5.1–7.8) | ||||||
Polyarticular disease course (> 4 affected joints) | 48.9 | (23/47) | 48.9 | (23/47) | ||||||
Oligoarticular JIA category1 | 51.1 | (24/47) | 51.1 | (24/47) | ||||||
DMARDs ongoing | 72.3 | (34/47) | 66.0 | (31/47) | ||||||
Active joints > 0 | 17.0 | (8/47) | 10.6 | (5/47) | ||||||
MDglobalVAS > 0 | 34.0 | (16/47) | 21.7 | (10/46) | ||||||
ESR ≥ 20 mm/h | 2.2 | (1/46) | 2.1 | (1/47) | ||||||
PRglobalVAS > 0 | 72.3 | (34/47) | 61.7 | (29/47) | ||||||
VAS global pain > 0 | 51.1 | (24/47) | 74.5 | (35/47) | ||||||
CHAQ > 0 | 66.0 | (31/47) | 59.6 | (28/47) | ||||||
JADAS ≥ 1 | 70.2 | (33/47) | 63.0 | (29/46) | ||||||
TMJ involvement ever2 | 23.4 | (11/47) | 27.7 | (13/47) | ||||||
TMJ involvement at study visit2 | 4.3 | (2/47) | 2.1 | (1/47) | ||||||