Name
agesmok
Label
Age when first smoked cigarettes
Units
years
Type
numeric
Visit vs Age when first smoked cigarettes
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Visit 5 | 331 | 17.5 | ± 5.9 | 17.0 | -2.0 | 55.0 | 404 | 735 |
Participant's age (category) vs Age when first smoked cigarettes
Visit 5
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 294 | 17.6 | ± 6.0 | 17.0 | -2.0 | 55.0 | 364 | 658 |
| 5-14 yrs old | - | - | - | - | - | - | 64 | 64 |
| 15-24 yrs old | 23 | 15.0 | ± 1.6 | 15.0 | 13.0 | 19.0 | 89 | 112 |
| 25-34 yrs old | 26 | 18.2 | ± 6.1 | 18.0 | -2.0 | 28.0 | 36 | 62 |
| 35-44 years | 54 | 16.2 | ± 3.4 | 16.0 | 9.0 | 26.0 | 44 | 98 |
| 45-54 years | 73 | 19.0 | ± 6.3 | 18.0 | 12.0 | 48.0 | 75 | 148 |
| 55-64 years | 60 | 17.5 | ± 6.0 | 17.0 | -2.0 | 50.0 | 24 | 84 |
| 65-74 years | 39 | 18.3 | ± 7.9 | 18.0 | -2.0 | 55.0 | 18 | 57 |
| 75-84 years | 19 | 18.2 | ± 7.5 | 18.0 | -2.0 | 35.0 | 12 | 31 |
| 85 years or older | - | - | - | - | - | - | 2 | 2 |
Participant's sex vs Age when first smoked cigarettes
Visit 5
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 331 | 17.5 | ± 5.9 | 17.0 | -2.0 | 55.0 | 404 | 735 |
| Female | 161 | 18.0 | ± 5.9 | 18.0 | -2.0 | 48.0 | 245 | 406 |
| Male | 170 | 17.0 | ± 5.9 | 16.0 | -2.0 | 55.0 | 159 | 329 |
Participant's race vs Age when first smoked cigarettes
Visit 5
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Total | 331 | 17.5 | ± 5.9 | 17.0 | -2.0 | 55.0 | 404 | 735 |
| White | 134 | 17.6 | ± 5.1 | 17.0 | 9.0 | 50.0 | 170 | 304 |
| Black | 191 | 17.5 | ± 6.5 | 17.0 | -2.0 | 55.0 | 218 | 409 |
| More than one race | 6 | 15.8 | ± 2.1 | 16.0 | 13.0 | 18.0 | 16 | 22 |