Age

Visit vs Age first started smoking pipes
N Mean StdDev Median Min Max Unknown Total
Visit 5 53 24.6 ± 8.9 22.0 0.0 50.0 682 735
Participant's age (category) vs Age first started smoking pipes
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 47 24.8 ± 9.3 22.0 0.0 50.0 611 658
5-14 yrs old - - - - - - 64 64
15-24 yrs old 1 18.0 - 18.0 18.0 18.0 111 112
25-34 yrs old 1 22.0 - 22.0 22.0 22.0 61 62
35-44 years 3 25.0 ± 5.0 25.0 20.0 30.0 95 98
45-54 years 14 19.6 ± 6.4 20.0 0.0 28.0 134 148
55-64 years 11 25.7 ± 6.6 30.0 16.0 35.0 73 84
65-74 years 10 27.9 ± 13.0 23.5 12.0 50.0 47 57
75-84 years 7 30.7 ± 10.5 35.0 17.0 45.0 24 31
85 years or older - - - - - - 2 2
Participant's sex vs Age first started smoking pipes
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 53 24.6 ± 8.9 22.0 0.0 50.0 682 735
Female - - - - - - 406 406
Male 53 24.6 ± 8.9 22.0 0.0 50.0 276 329
Participant's race vs Age first started smoking pipes
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 53 24.6 ± 8.9 22.0 0.0 50.0 682 735
White 31 25.1 ± 7.7 22.0 17.0 50.0 273 304
Black 20 23.8 ± 10.9 21.5 0.0 50.0 389 409
More than one race 2 26.0 ± 7.1 26.0 21.0 31.0 20 22