| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 10668 |
81.2%
|
| 2 | once or less than than once a month | 884 |
6.7%
|
| 3 | every other month | 417 |
3.2%
|
| 4 | every month | 410 |
3.1%
|
| 5 | every week | 385 |
2.9%
|
| 6 | everyday | 374 |
2.8%
|
| Sysmiss | 6141 |