Race

Visit vs Years smoked
N Mean StdDev Median Min Max Unknown Total
Visit 5 328 23.0 ± 14.7 22.0 0.0 79.0 407 735
Participant's age (category) vs Years smoked
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 292 23.2 ± 14.7 22.3 0.0 79.0 366 658
5-14 yrs old - - - - - - 64 64
15-24 yrs old 23 3.9 ± 1.8 4.0 1.3 8.2 89 112
25-34 yrs old 26 11.0 ± 4.9 11.1 2.8 25.0 36 62
35-44 years 54 21.8 ± 6.1 22.7 5.0 33.2 44 98
45-54 years 73 21.7 ± 11.4 24.0 0.0 39.3 75 148
55-64 years 59 29.5 ± 13.5 32.3 6.0 50.8 25 84
65-74 years 38 30.9 ± 17.1 30.0 1.0 59.5 19 57
75-84 years 19 37.7 ± 21.8 34.0 7.0 79.0 12 31
85 years or older - - - - - - 2 2
Participant's sex vs Years smoked
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 328 23.0 ± 14.7 22.0 0.0 79.0 407 735
Female 160 22.3 ± 14.4 21.6 1.0 79.0 246 406
Male 168 23.7 ± 15.0 22.7 0.0 66.9 161 329
Participant's race vs Years smoked
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 328 23.0 ± 14.7 22.0 0.0 79.0 407 735
White 133 21.1 ± 13.6 20.0 1.5 51.0 171 304
Black 189 24.7 ± 15.2 23.1 0.0 79.0 220 409
More than one race 6 12.0 ± 12.6 7.7 2.0 35.0 16 22