| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3467 |
14%
|
| 2 | Monthly | 2757 |
11.1%
|
| 3 | Yearly | 1409 |
5.7%
|
| 4 | Less often | 3159 |
12.8%
|
| 5 | Not at all | 13975 |
56.4%
|
| Sysmiss | 817 |