| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 817 |
58.3%
|
| 1 | 1. once a day | 108 |
7.7%
|
| 2 | 2. 2 or more times a day | 425 |
30.3%
|
| 3 | 3. once a week | 35 |
2.5%
|
| 4 | 4. once a month | 17 |
1.2%
|
| Sysmiss | 161 |