| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1641 |
84.1%
|
| 2 | I have not stopped smoking | 82 |
4.2%
|
| 3 | less than one month | 65 |
3.3%
|
| 4 | 1-3 months | 24 |
1.2%
|
| 5 | 4-11 months | 20 |
1%
|
| 6 | one year | 20 |
1%
|
| 7 | two years | 31 |
1.6%
|
| 8 | three years or more | 69 |
3.5%
|
| Sysmiss | 10 |