Table 1.
Demographic data, depression, and smoking-related variables in high-dependent and low-dependent smokers (s.e.m. stands for standard error of the mean).
| High Dependent FTND ≥ 4 (n=155) |
Low Dependent FTND < 4 (n=86) |
p-value* | |
|---|---|---|---|
| FTND (mean ± s.e.m.) | 5.8 ± 0.12 | 1.6 ± 0.1 | - |
| Age (mean ± s.e.m.) | 39.7 ± 0.8 | 35.3 ± 1.1 | 0.001 |
| Sex (% female) | 56.1 | 46.5 | 0.178 |
| Race (% White) | 66.5 | 66.3 | 0.222 |
| Comorbidity (% depressed) | 43.4 | 45.4 | 0.893 |
| Amount smoked (cigarettes/day) Missing cases |
19.8±0.6 5 |
11.3±0.7 2 |
< 0.001 |
| Age started smoking (mean ± s.e.m.) Missing cases |
15.1 ± 0.4 13 |
15.5 ± 0.4 3 |
0.580 |
| Current or lifetime DSM-IV nicotine dependence (% positive) |
54.8 | 57.0 | 0.788 |
| Number of withdrawal symptoms (mean ± s.e.m.) Missing cases |
6.7 ± 0.2 19 |
6.0 ± 0.3 11 |
0.052 |
*
T-tests and Fisher’s exact tests as appropriate.