| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3715 |
95%
|
| 2 | I have not stopped smoking | 21 |
0.5%
|
| 3 | 1-3 months | 56 |
1.4%
|
| 4 | 4-11 months | 24 |
0.6%
|
| 5 | One year | 25 |
0.6%
|
| 6 | 2 years | 20 |
0.5%
|
| 7 | 3 years or longer | 49 |
1.3%
|
| Sysmiss | 7 |