Table 1

Study cohort characteristics

CovariatesSmoker (%; n=62 960)Former smoker (%; n=109 395)p Values
Males56.462.9<0.0001
Females43.637.1<0.0001
Age<0.001
 12–344.21.5
 35–5420.43.1
 55–6938.224.4
 70–80+3146.1
Education<0.001
 <Secondary18.918.2
 Secondary11.513.6
 Some postsecondary3.85.1
Income<0.001
 None or <$20 00020.714.3
 $20 000–$39 00025.329.3
 $40 000–$59 00019.117.3
 $60 000–$79 0006.27.11
 $80 000+10.513.5