| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never used | 1938 |
86.5%
|
| 2 | I don't smoke now | 100 |
4.5%
|
| 3 | Yes | 136 |
6.1%
|
| 4 | No | 67 |
3%
|
| Sysmiss | 16 |