Prediction of COPD risk accounting for time-varying smoking exposures
Fig 3
Examples for age-specific incidence rates and relative risks of COPD.
(a) and (b) show the age-specific COPD incidence rates (per 100,000) among never smokers and current smokers. (c) and (d) show the relative risk of COPD of females vs. males among never smokers and current smokers (20 CPD). (e) and (f) show the relative risk of COPD of current smokers vs. never smokers and former smokers vs. current smokers, respectively. Smokers were assumed smoking either 20 or 40 CPD starting at age 20. Former smokers were assumed to quit smoking at age 40. Blue lines (males); Red lines (females).