Demographic details of study subjects (n = 248)
| Characteristic | |
|---|---|
| Mean (range) age (years) | 41 (11–68) |
| Sex (M/F) | 105 (42%)/143 (58%) |
| Smoking status, n (%) | |
| Smokers | 33 (13%) |
| Non-smokers | 215 (87%) |
| Asthma treatment | |
| Receiving inhaled steroids, n (%) | 149 (60%) |
| Mean, median (range) | 658 μg, 400 μg (100–2000) |
| Not receiving inhaled steroids, n (%) | 99 (40%) |
| Mean (range) FEV1 % predicted | 87.4% (24–132) |
| Allergen sensitisation (n (%) positive): | |
| Dust mite | 185 (75%) |
| Cat | 149 (60%) |
| Dog | 124 (50%) |
| Allergen exposure (to high levels): | |
| Dust mite | 109 (46%) |
| Cat | 63 (25%) |
| Dog | 52 (22%) |