Attacks of SOB | Wheezing | Asthmatic symptom complex | Asthma | Asthma medicines | Chronic productive cough | |||||||
CIR % | OR (95% CI) | CIR % | OR (95% CI) | CIR % | OR (95% CI) | CIR % | OR (95% CI) | CIR % | OR (95% CI) | CIR % | OR (95% CI) | |
Subjects n | 477 | 353 | 291 | 271 | 402 | 300 | ||||||
Manual workers in industry | 13 | 1.7 (1.2–2.4) | 11 | 1.7 (1.1–2.6) | 8.8 | 1.9 (1.2–3.1) | 6.5 | 1.7 (1.0–2.7) | 8.7 | 1.5 (0.99–2.2) | 8.5 | 1.7 (1.1–2.7) |
Manual workers in service | 14 | 1.4 (1.0–2.0) | 12 | 1.8 (1.3–2.7) | 8.7 | 1.7 (1.1–2.6) | 6.9 | 1.3 (0.84–1.9) | 11 | 1.4 (1.0–2.0) | 7.5 | 1.5 (1.0–2.3) |
Assistant non-manual employees | 12 | 1.3 (0.90–1.8) | 10 | 1.5 (0.99–2.2) | 7.7 | 1.5 (0.95–2.3) | 5.5 | 1.0 (0.64–1.6) | 8.9 | 1.1 (0.75–1.6) | 6.3 | 1.3 (0.85–2.1) |
Professionals | 9.5 | 1 | 6.5 | 1 | 4.8 | 1 | 5.0 | 1 | 7.7 | 1 | 4.4 | 1 |
Housewives | 11 | 0.98 (0.55–1.7) | 11 | 1.7 (0.86–3.3) | 8.2 | 1.6 (0.79–34) | 8.0 | 1.5 (0.75–2.8) | 9.8 | 1.2 (0.67–2.2) | 8.8 | 1.8 (0.92–3.5) |
Self-employed | 15 | 1.8 (1.1–2.9) | 7.7 | 1.2 (0.59–2.2) | 6.1 | 1.2 (0.59–2.5) | 7.2 | 1.6 (0.69–3.7) | 9.3 | 1.3 (0.72–2.3) | 7.3 | 1.6 (0.76–3.5) |
Total | 12 | – | 10 | – | 7.6 | – | 6.2 | – | 9.2 | – | 6.9 | – |
Multiple logistic regression analyses were performed, with adjustment for age, sex, a family history of asthma, smoking habits, and an occupation in which exposure to dust, gases or fumes is common. SOB: shortness of breath; OR: odds ratio; CI: confidence interval.