| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1536 |
95%
|
| 2 | I have not stopped smoking | 17 |
1.1%
|
| 3 | 1-3 months | 20 |
1.2%
|
| 4 | 4-11 months | 5 |
0.3%
|
| 5 | One year | 10 |
0.6%
|
| 6 | 2 years | 6 |
0.4%
|
| 7 | 3 years or longer | 22 |
1.4%
|
| Sysmiss | 3 |