| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all | 192 |
16.3%
|
| 2 | Per week | 106 |
9%
|
| 3 | Per month | 348 |
29.5%
|
| 4 | Per year | 522 |
44.2%
|
| 8 | Other | 13 |
1.1%
|
| 99 | N/A | 0 |
0%
|
| Sysmiss | 816 |