| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2246 |
9.1%
|
| 2 | Monthly | 790 |
3.2%
|
| 3 | Yearly | 659 |
2.7%
|
| 4 | Less often | 1526 |
6.2%
|
| 5 | Not at all | 19371 |
78.8%
|
| Sysmiss | 516 |