| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 4869 |
77.6%
|
| 2 | I have not stopped smoking | 530 |
8.4%
|
| 3 | 1-3 months | 290 |
4.6%
|
| 4 | 4-11 months | 140 |
2.2%
|
| 5 | One year | 155 |
2.5%
|
| 6 | 2 years | 115 |
1.8%
|
| 7 | 3 years or longer | 175 |
2.8%
|
| Sysmiss | 56 |