| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 999 |
62.6%
|
| 2 | Occasionally | 262 |
16.4%
|
| 3 | Often | 45 |
2.8%
|
| 4 | Quite often | 40 |
2.5%
|
| 5 | I have never smoked | 250 |
15.7%
|
| Sysmiss | 11 |