Associations between asthma symptoms and cleaning worker status
| Former cleaners (n=86) | Current cleaners (n=761) | |
| OR (95% CI) | OR (95% CI) | |
| Wheeze without having a cold | 2.0 (0.6 to 6.5) | 1.3 (0.5 to 3.3) |
| Chronic cough | 2.4 (0.7 to 8.2) | 1.8 (0.7 to 4.7) |
| Current asthma | 1.9 (0.5 to 7.8) | 1.9 (0.6 to 5.5) |
| Adult-onset asthma | 2.5 (0.5 to 12) | 1.4 (0.4 to 4.9) |
| Asthma score* | 1.4 (0.6 to 3.2) | 1.4 (0.8 to 2.6) |
ORs and 95% CIs from logistic regression models adjusted for age, nationality, sex and smoking status. Reference category: never cleaners (n=70).
↵* Mean ratios and 95% CIs from negative binomial regression models adjusted for age, nationality, sex and smoking status.