| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1874 |
86.8%
|
| 2 | I have not stopped smoking | 87 |
4%
|
| 3 | Less than 4 months | 67 |
3.1%
|
| 4 | 4-11 months | 33 |
1.5%
|
| 5 | One year | 20 |
0.9%
|
| 6 | 2 years | 16 |
0.7%
|
| 7 | 3 years or longer | 62 |
2.9%
|
| Sysmiss | 15 |