| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never used tobacco | 4227 |
63.7%
|
| 2 | I have not stopped using tobacco | 815 |
12.3%
|
| 3 | 1-3 months | 613 |
9.2%
|
| 4 | 4-11 months | 208 |
3.1%
|
| 5 | One year | 257 |
3.9%
|
| 6 | 2 years | 155 |
2.3%
|
| 7 | 3 years or longer | 356 |
5.4%
|
| Sysmiss | 29 |