Subjects n | 167 | 217 | 161 | |
Female | 68.3 | 65.4 | 67.7 | ns |
Age years | 43.5±6.9 | 43.9±7.1 | 44.6±6.5 | ns |
Sensitisation to common allergens# | 153 (56.2) | 188 (50.0) | 138 (44.9) | ns |
Total IgE >100 kU·L−1 | 153 (37.3) | 188 (38.3) | 138 (44.9) | ns |
BHR¶ | 122 (32.8) | 131 (51.9) | 73 (65.8) | <0.001 |
Use of ICS in past 12 months | 166 (25.9) | 212 (47.2) | 158 (66.5) | <0.001 |
Use of oral corticosteroids in past 12 months+ | 0.0 | 3.7 | 23.5 | <0.001 |
Four domains of asthma control n | 167 | 217 | 161 | |
Lung function FEV1 <80% pred§ | 0.0 | 20.6 | 22.5 | <0.001 |
Symptoms in past 3 months | 0.0 | 54.8 | 86.3 | <0.001 |
Exacerbations in past 12 months | 0.0 | 0.0 | 35.4 | <0.001 |
Activity limitation in past 12 months | 0.0 | 24.0 | 52.8 | <0.001 |
Smoking habits n | 167 | 217 | 161 | ns |
Nonsmokers | 45.5 | 46.1 | 46.6 | |
Ex-smokers | 24.0 | 27.2 | 27.9 | |
Current smokers | 30.5 | 26.7 | 25.5 | |
Age finishing full-time education years n | 167 | 217 | 161 | ns |
<17 | 26.4 | 25.3 | 26.7 | |
17–20 | 34.7 | 27.7 | 29.2 | |
>20 | 38.9 | 47.0 | 44.1 | |
Body mass index n | 166 | 200 | 140 | ns |
<25 kg·m−2 | 45.8 | 45.0 | 38.6 | |
25–30 kg·m−2 | 37.9 | 36.5 | 36.4 | |
≥30 kg·m−2 | 16.3 | 18.5 | 25.0 | |
Have you had to leave jobs (during follow-up) because it affected your breathing? | 163 (3.7) | 212 (6.6) | 152 (14.5) | 0.001 |
Asthma-specific job exposure matrix n | 167 | 216 | 161 | ns |
Nonasthmagenic irritants in life | 15.6 | 13.9 | 16.8 | |
Asthmagens in life | 26.4 | 23.2 | 31.1 | |