| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 2223 |
80.5%
|
| 2 | 0 times | 290 |
10.5%
|
| 3 | 1 to 3 times | 159 |
5.8%
|
| 4 | 4 or more times | 88 |
3.2%
|
| Sysmiss | 29 |