Table 2 Hazard ratios (HR) with 95% confidence intervals (CI) for respiratory work disability (i.e. changing work due to respiratory symptoms) in a cohort of pulp mill workers exposed to irritant gases (gassings).
Variable 1 | HR | 95% CI |
|---|---|---|
Exposure (gassings) 2 | 5.3 | 2.7-10.5 |
Asthma2 | 6.7 | 4.1-11.0 |
Chronic bronchitis2 | 1.8 | 1.1-3.1 |
Chronic rhinitis2 | 1.8 | 1.1-3.0 |
ETS exposure at work in pulp industry2 | 1.5 | 0.9-2.5 |