| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1516 |
70.7%
|
| 2 | 0 times | 313 |
14.6%
|
| 3 | 1 to 3 times | 240 |
11.2%
|
| 4 | 4 or more times | 76 |
3.5%
|
| Sysmiss | 10 |