| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1284 |
88.7%
|
| 2 | I have not stopped smoking | 48 |
3.3%
|
| 3 | 1-3 months | 39 |
2.7%
|
| 4 | 4-11 months | 14 |
1%
|
| 5 | One year | 21 |
1.5%
|
| 6 | 2 years | 12 |
0.8%
|
| 7 | 3 years or longer | 30 |
2.1%
|
| Sysmiss | 6 |