| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1275 |
56.7%
|
| 2 | 0 times | 656 |
29.2%
|
| 3 | 1 to 3 times | 184 |
8.2%
|
| 4 | 4 or more times | 133 |
5.9%
|
| Sysmiss | 29 |