| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 4447 |
88.9%
|
| 2 | I have not stopped smoking | 90 |
1.8%
|
| 3 | 1-3 months | 127 |
2.5%
|
| 4 | 4-11 months | 82 |
1.6%
|
| 5 | One year | 80 |
1.6%
|
| 6 | 2 years | 60 |
1.2%
|
| 7 | 3 years or longer | 116 |
2.3%
|
| Sysmiss | 29 |