From: Risk factors for respiratory work disability in a cohort of pulp mill workers exposed to irritant gases
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
1.1-3.0
ETS exposure at work in pulp industry2
1.5
0.9-2.5