Table 1.

Characteristics of the study population

Adult smoker (n = 3,585)Nonsmoker (n = 1,077)
Age, y41.7 ± 12.743.3 ± 14.7
Gender, n (%)
 Male1,526 (42.6)438 (40.7)
 Female2,059 (57.4)639 (59.3)
Race,an (%)
 White2,727 (76.1)851 (79.0)
 Black614 (17.1)151 (14.0)
 Other218 (6.1)67 (6.2)
BMI, kg/m227.8 ± 6.728.1 ± 6.7
Smoking years21.9 ± 12.8
CPD16.0 ± 8.9

NOTE: Data shown as mean ± SD, unless otherwise indicated.

  • aRacial information was missing in 26 (0.7%) smokers and 8 (0.7%) nonsmokers.