PPD response of patients with JIA according to disease activity.
| JIA, n = 115 | Controls, n = 45 | p | ||||
|---|---|---|---|---|---|---|
| Active Disease | Inactive Disease | p1 | p2 | p3 | ||
| PPD induration, mm, mean ± SD | 4 ± 5.66 | 4.17 ± 5.10 | 7.83 ± 3.47 | NS | < 0.001 | < 0.001 |
| PPD induration | ||||||
| 0–4 mm, n (%) | 20 (62.5) | 50 (60.2) | 7 (15.5) | NS | 0.016 | 0.015 |
| ≥ 5 mm, n (%) | 12 (37.5) | 33 (39.7) | 38 (84.4) | NS | 0.031 | 0.029 |
| ≥10 mm, n (%) | 7 (21.8) | 17 (20.4) | 20 (44.5) | NS | 0.033 | 0.032 |
NS: statistically not significant (p > 0.05). p1: between patients with active and inactive disease. p2: between active disease and healthy children. p3: between inactive disease and healthy children.