Current Smokers verses Never Smokers, p<0.0001
Former Smokers verses Never Smokers, p=0.0036
Current Smokers verses Former Smokers, p=0.211
Figure 1: The Cumulative Incidence Function (CIF) for COPD mortality accounting for CVD mortality by smoking category. Current Smokers are plotted in black, Former Smokers are plotted in purple and Never Smokers are plotted in blue.Current Smokers are at increased risk for COPD mortality compared to Never Smokers (p<0.0001) but they have a similar CIF compared to Former Smokers (p=0.224).Former Smokers are at increased risk for COPD mortality compared to Never Smokers (0.00041).