| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 1006 |
62.1%
|
| 2 | 0 times | 284 |
17.5%
|
| 3 | 1 to 3 times | 229 |
14.1%
|
| 4 | 4 or more times | 100 |
6.2%
|
| Sysmiss | 10 |