Gender

Visit vs How many pipes (bowls) on average
N Mean StdDev Median Min Max Unknown Total
Visit 5 52 1.7 ± 1.5 1.0 0.0 6.0 683 735
Participant's age (category) vs How many pipes (bowls) on average
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 46 1.8 ± 1.5 1.0 0.0 6.0 612 658
5-14 yrs old - - - - - - 64 64
15-24 yrs old 1 0.0 - 0.0 0.0 0.0 111 112
25-34 yrs old 1 3.0 - 3.0 3.0 3.0 61 62
35-44 years 2 1.0 ± 0.0 1.0 1.0 1.0 96 98
45-54 years 14 1.0 ± 0.8 1.0 0.0 3.0 134 148
55-64 years 11 1.9 ± 1.2 2.0 0.0 4.0 73 84
65-74 years 10 2.2 ± 1.5 2.0 1.0 6.0 47 57
75-84 years 7 2.9 ± 2.2 2.0 0.0 6.0 24 31
85 years or older - - - - - - 2 2
Participant's sex vs How many pipes (bowls) on average
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 52 1.7 ± 1.5 1.0 0.0 6.0 683 735
Female 2 0.5 ± 0.7 0.5 0.0 1.0 404 406
Male 50 1.7 ± 1.5 1.0 0.0 6.0 279 329
Participant's race vs How many pipes (bowls) on average
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 52 1.7 ± 1.5 1.0 0.0 6.0 683 735
White 30 2.0 ± 1.7 1.0 0.0 6.0 274 304
Black 20 1.3 ± 1.1 1.0 0.0 4.0 389 409
More than one race 2 1.0 ± 0.0 1.0 1.0 1.0 20 22