| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 760 |
53.2%
|
| 1 | 1. once a day | 159 |
11.1%
|
| 2 | 2. 2 or more times a day | 423 |
29.6%
|
| 3 | 3. once a week | 71 |
5%
|
| 4 | 4. once a month | 16 |
1.1%
|
| Sysmiss | 134 |