| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 7219 |
38.7%
|
| 2 | once or less than than once a month | 3446 |
18.5%
|
| 3 | every other month | 1899 |
10.2%
|
| 4 | every month | 1835 |
9.8%
|
| 5 | every week | 2488 |
13.3%
|
| 6 | everyday | 1774 |
9.5%
|
| Sysmiss | 618 |