| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 3300 |
87.8%
|
| 2 | 0 times | 266 |
7.1%
|
| 3 | 1 to 3 times | 149 |
4%
|
| 4 | 4 or more times | 45 |
1.2%
|
| Sysmiss | 34 |