| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3300 |
92.9%
|
| 2 | I have not stopped smoking | 37 |
1%
|
| 3 | 1-3 months | 79 |
2.2%
|
| 4 | 4-11 months | 21 |
0.6%
|
| 5 | One year | 47 |
1.3%
|
| 6 | 2 years | 17 |
0.5%
|
| 7 | 3 years or longer | 50 |
1.4%
|
| Sysmiss | 2 |