| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 1293 |
90.5%
|
| 1 | 1. once a day | 27 |
1.9%
|
| 2 | 2. 2 or more times a day | 38 |
2.7%
|
| 3 | 3. once a week | 37 |
2.6%
|
| 4 | 4. once a month | 34 |
2.4%
|
| Sysmiss | 134 |