| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3523 |
85.2%
|
| 2 | I have not stopped smoking | 78 |
1.9%
|
| 3 | 1-3 months | 132 |
3.2%
|
| 4 | 4-11 months | 87 |
2.1%
|
| 5 | One year | 114 |
2.8%
|
| 6 | 2 years | 102 |
2.5%
|
| 7 | 3 years or longer | 98 |
2.4%
|
| Sysmiss | 12 |