| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1776 |
92.3%
|
| 2 | I have not stopped smoking | 32 |
1.7%
|
| 3 | 1-3 months | 38 |
2%
|
| 4 | 4-11 months | 16 |
0.8%
|
| 5 | One year | 13 |
0.7%
|
| 6 | 2 years | 5 |
0.3%
|
| 7 | 3 years or longer | 45 |
2.3%
|
| Sysmiss | 22 |