| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 6020 |
72.4%
|
| 2 | I have not stopped smoking | 826 |
9.9%
|
| 3 | One month | 470 |
5.7%
|
| 4 | Several Months | 309 |
3.7%
|
| 5 | One year | 216 |
2.6%
|
| 6 | 2 years | 180 |
2.2%
|
| 7 | 3 years or longer | 293 |
3.5%
|
| Sysmiss | 60 |