| Value | Category | Cases | |
|---|---|---|---|
| 0 | nr | 0 |
0%
|
| 1 | at least once a day | 144 |
4.9%
|
| 2 | at least once a week | 301 |
10.2%
|
| 3 | least often than once a week | 463 |
15.6%
|
| 4 | never | 2052 |
69.3%
|
| Sysmiss | 40 |