| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1299 |
77%
|
| 2 | 0 times | 174 |
10.3%
|
| 3 | 1 to 3 times | 141 |
8.4%
|
| 4 | 4 or more times | 72 |
4.3%
|
| Sysmiss | 51 |