| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3096 |
12.6%
|
| 2 | Monthly | 1978 |
8%
|
| 3 | Yearly | 1071 |
4.3%
|
| 4 | Less often | 2659 |
10.8%
|
| 5 | Not at all | 15846 |
64.3%
|
| Sysmiss | 510 |