| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 7037 |
28.5%
|
| 2 | Monthly | 3713 |
15.1%
|
| 3 | Yearly | 1395 |
5.7%
|
| 4 | Less often | 3233 |
13.1%
|
| 5 | Not at all | 9272 |
37.6%
|
| Sysmiss | 510 |