| Value | Category | Cases | |
|---|---|---|---|
| 1 | I did not smoke “nas” during the past 30 days (one month) | 6067 |
95.9%
|
| 2 | Less than once a week | 216 |
3.4%
|
| 3 | At least once a week but not every day | 34 |
0.5%
|
| 4 | Every day | 9 |
0.1%
|
| Sysmiss | 80 |