| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1781 |
80.9%
|
| 2 | I have not stopped smoking | 155 |
7%
|
| 3 | 1-3 months | 130 |
5.9%
|
| 4 | 4-11 months | 33 |
1.5%
|
| 5 | One year | 18 |
0.8%
|
| 6 | 2 years | 18 |
0.8%
|
| 7 | 3 years or longer | 67 |
3%
|
| Sysmiss | 10 |