| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 4356 |
95.7%
|
| 2 | I have not stopped smoking | 42 |
0.9%
|
| 3 | 1-3 months | 43 |
0.9%
|
| 4 | 4-11 months | 18 |
0.4%
|
| 5 | One year | 21 |
0.5%
|
| 6 | 2 years | 24 |
0.5%
|
| 7 | 3 years or longer | 48 |
1.1%
|
| Sysmiss | 4 |