Demographic data and tuberculin responses of atopic and non-atopic subjects
| Atopic (n=424) | Non-atopic (n=556) | |
| Mean (SD) age (years) | 10.1 (0.3) | 10.1 (0.3) |
| Tuberculin responses, n (%)3-150 | ||
| <5 mm | 298 (70.3) | 384 (69.1) |
| 5–9 mm | 58 (13.7) | 75 (13.5) |
| ⩾10 mm | 68 (16.0) | 97 (17.4) |
| Mean (SE) weal (mm)3-151 | 3.4 (0.2) | 3.3 (0.2) |