| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked | 4665 |
77.3%
|
| 2 | today | 564 |
9.3%
|
| 3 | not today but sometime in last week | 347 |
5.8%
|
| 4 | not today but sometime in last month | 458 |
7.6%
|
| Sysmiss | 296 |