| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 698 |
48.8%
|
| 1 | 1. once a day | 142 |
9.9%
|
| 2 | 2. 2 or more times a day | 555 |
38.8%
|
| 3 | 3. once a week | 29 |
2%
|
| 4 | 4. once a month | 5 |
0.3%
|
| Sysmiss | 134 |