| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 1270 |
88.9%
|
| 1 | 1. once a day | 30 |
2.1%
|
| 2 | 2. 2 or more times a day | 22 |
1.5%
|
| 3 | 3. once a week | 44 |
3.1%
|
| 4 | 4. once a month | 63 |
4.4%
|
| Sysmiss | 134 |