From: Particulate air pollution and survival in a COPD cohort
HR
95% CI
young
1.11
1.085
1.128
old
1.14
1.119
1.164
female
1.10
1.080
1.130
male
1.15
1.122
1.178
other race
1.23
1.194
1.271
white
1.12
1.099
1.141