| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 4441 |
86.8%
|
| 2 | I have not stopped smoking | 245 |
4.8%
|
| 3 | 1-3 months | 167 |
3.3%
|
| 4 | 4-11 months | 92 |
1.8%
|
| 5 | One year | 85 |
1.7%
|
| 6 | 2 years | 37 |
0.7%
|
| 7 | 3 years or longer | 51 |
1%
|
| Sysmiss | 23 |