| Value | Category | Cases | |
|---|---|---|---|
| 0 | not at all | 8231 |
55.5%
|
| 1 | less than once a week | 2288 |
15.4%
|
| 2 | at least once a week | 2793 |
18.8%
|
| 3 | almost every day | 1519 |
10.2%
|
| Sysmiss | 115 |