| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 861 |
61.4%
|
| 1 | 1. once a day | 55 |
3.9%
|
| 2 | 2. 2 or more times a day | 441 |
31.5%
|
| 3 | 3. once a week | 32 |
2.3%
|
| 4 | 4. once a month | 13 |
0.9%
|
| Sysmiss | 161 |