| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3096 |
75%
|
| 2 | I have not stopped smoking | 233 |
5.6%
|
| 3 | 1-3 months | 328 |
7.9%
|
| 4 | 4-11 months | 96 |
2.3%
|
| 5 | One year | 146 |
3.5%
|
| 6 | 2 years | 70 |
1.7%
|
| 7 | 3 years or longer | 161 |
3.9%
|
| Sysmiss | 11 |