| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 0 |
0%
|
| 2 | I have not stopped smoking | 6 |
4.2%
|
| 3 | 1-3 months | 9 |
6.3%
|
| 4 | 4-11 months | 14 |
9.8%
|
| 5 | One year | 13 |
9.1%
|
| 6 | 2 years | 20 |
14%
|
| 7 | 3 years or longer | 21 |
14.7%
|
| 8 | 60 |
42%
|
|
| Sysmiss | 2620 |