| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1492 |
75.8%
|
| 2 | 0 times | 347 |
17.6%
|
| 3 | 1 to 3 times | 100 |
5.1%
|
| 4 | 4 or more times | 30 |
1.5%
|
| Sysmiss | 10 |