| Value | Category | Cases | |
|---|---|---|---|
| 1 | I did not use nasvai during the past 30 days (one month) | 4090 |
96.4%
|
| 2 | Less than once a week | 84 |
2%
|
| 3 | At least once a week but not every day | 32 |
0.8%
|
| 4 | Every day | 35 |
0.8%
|
| Sysmiss | 29 |