| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 2468 |
85.8%
|
| 2 | 1-3 months | 74 |
2.6%
|
| 3 | 4-11 months | 63 |
2.2%
|
| 4 | One year | 44 |
1.5%
|
| 5 | 2 years | 42 |
1.5%
|
| 6 | 3 years or longer | 97 |
3.4%
|
| 7 | I have not stopped smoking | 88 |
3.1%
|
| Sysmiss | 17 |