Numbers of children with symptoms and symptomatic bronchial hyperresponsiveness (BHR) by increasing exposure to domestic allergens
| Allergen | μg/g median (range) | Symptoms and BHR | Symptoms | Control |
|---|---|---|---|---|
| Mite3-150 | ||||
| 1 | 0.2 (<0.2–0.3) | 9 | 18 | 25 |
| 2 | 0.42 (0.3–0.6) | 6 | 16 | 18 |
| 3 | 0.92 (0.62–1.8) | 8 | 20 | 20 |
| 4 | 5.0 (1.8–10.0) | 10 | 16 | 28 |
| 5 | 17.1 (10.2–23.9) | 11 | 4 | 34 |
| 6 | 38.2 (24.0–155) | 16 | 13 | 31 |
| Cat3-159 | ||||
| 1 | 0.6 (<0.5–0.9) | 17 | 12 | 33 |
| 2 | 1.5 (0.9–1.9) | 8 | 14 | 23 |
| 3 | 3.2 (2.0–4.4) | 6 | 16 | 22 |
| 4 | 9.3 (4.5–23.0) | 12 | 14 | 27 |
| 5 | 64 (23.4–112) | 9 | 11 | 27 |
| 6 | 270 (123–920) | 8 | 20 | 24 |
| Cockroach3-160 | ||||
| 1 | <0.08 (<0.08) | 48 | 82 | 134 |
| 2 | 0.33 (>0.08–15.6) | 12 | 5 | 21 |
↵3-150 Asthma vs controls, p<0.55; asthma vs symptoms, p = 0.006 (positive).
↵3-159 Asthma vs controls, p<0.43; asthma vs symptoms, p = 0.12 (negative).
↵3-160 Asthma vs controls, p = 0.33; asthma vs symptoms, p = 0.016.
p values analysed by χ2 test for trend for mite and cat exposure groups (see table 1) and χ2 for cockroach.