| N | % | |
| Variable | median (mean ± SD) | (range) |
| Sex men | 170 | 79.1 |
| women | 45 | 20.9 |
| Age(years) | 21 (22.3 ± 2.7) | (20 - 33) |
| Age at smoking initiation (years) | 18 (16.9 ± 3.0) | (8 - 24) |
| Current smoker | 119 | 55.3 |
| Number of cigarettes smoked per day | 10 (9.7 ± 7.2) | (1 - 40) |
| With family smokers | 123 | 57.2 |
| Had undergone smoking prevention education | 129 | 60 |