| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 2343 |
89.3%
|
| 2 | I have not stopped smoking | 269 |
10.3%
|
| 3 | Less than 4 months | 7 |
0.3%
|
| 4 | 4-11 months | 2 |
0.1%
|
| 5 | One year | 3 |
0.1%
|
| 6 | 2 years | 0 |
0%
|
| 7 | 3 years or longer | 0 |
0%
|
| Sysmiss | 8 |