Table 3 Baseline characteristics of the included children
Gender | Â | Â |
|---|---|---|
| Â | Total (n = 251) | Percentage |
Male | 149 | 59.4% |
Female | 102 | 40.6% |
Age | Â | Â |
Mean (SD) in years: 11.8 (3.0) | Â | Â |
6–11 years | 122 | 48.6% |
12–17 years | 129 | 51.4% |
Physical characteristics | Â | Â |
Weight in kg: mean (SD) | 47.5 (15.3) | Â |
Height in cm: mean (SD) | 154.6 (17.1) | Â |
Season with most complaints of allergy | Â | Â |
Spring | 35 | 13.9% |
Autumn | 14 | 5.6% |
Spring and autumn/entire year | 201 | 80.1% |
Nasal symptoms (scale 0–12) |  |  |
Telephone screening: mean (SD) | 6.8 (2.1) | Â |
Screening visit in last 3 months: mean (SD) | 5.8 (2.3) | Â |
Screening visit in last week: mean (SD) | 4.5 (2.6) | Â |
Asthma | Â | Â |
Asthma present | 92 | 36.7% |
Asthma medication | 99 | 39.4% |
Wheeze/breathless – ever | 154 | 62.3% |
Wheeze/breathless – last year | 131 | 53.9% |
Dry cough at night – last year | 130 | 52.6% |
Sensitization | Â | Â |
One allergen (monosensitized for HDM) | 58 | 23.1% |
Two allergens | 67 | 26.7% |
Three allergens | 72 | 28.7% |
Four allergens | 54 | 21.5% |
Sensitization to both HDM and | Â | Â |
Grass pollen | 179 | 71.3% |
Tree pollen | 108 | 43.0% |
Cat dander | 85 | 33.9% |