Characteristic | Group | |||||||
---|---|---|---|---|---|---|---|---|
Dependent Smokers | Nondependent Smokers | Exsmokers | Nonsmokers | |||||
Mean | S.E. | Mean | S.E. | Mean | S.E. | Mean | S.E. | |
Age | 38.3 | 1.4 | 33.8 | 1.1 | 42.5 | 1.4 | 34.0 | 0.6 |
Gender (M/F) | 18/27 | 3/9 | 7/10 | 10/9 | ||||
Cigarettes/day | 21.3 | 1.0 | 3.4 | 0.5 | 25.41-a | 2.7 | —1-b | — |
Years smoking | 20.3 | 1.4 | 13.7 | 1.4 | 18.51-a | 1.7 | — | — |
Cotinine (ng/ml) | 225.8 | 29.0 | 50.1 | 14.0 | — | — | — | — |
Carbon monoxide (ppm) | 28.8 | 2.4 | 6.8 | 1.0 | 3.0 | 0.4 | 3.1 | 0.3 |
FTND score1-c(0–10) | 5.1 | 0.3 | 0.8 | 0.3 | 6.11-a | 0.5 | — | — |