| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1507 |
74.9%
|
| 2 | 0 times | 235 |
11.7%
|
| 3 | 1 to 3 times | 201 |
10%
|
| 4 | 4 or more times | 69 |
3.4%
|
| Sysmiss | 14 |