| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 1263 |
90.1%
|
| 1 | 1. once a day | 39 |
2.8%
|
| 2 | 2. 2 or more times a day | 23 |
1.6%
|
| 3 | 3. once a week | 28 |
2%
|
| 4 | 4. once a month | 49 |
3.5%
|
| Sysmiss | 161 |