| Value | Category | Cases | |
|---|---|---|---|
| 1 | every month | 206 |
3.9%
|
| 2 | almost every month | 289 |
5.5%
|
| 3 | some months but not every month | 822 |
15.5%
|
| 4 | only in 1 or 2 months | 368 |
7%
|
| 5 | never | 3608 |
68.2%
|
| Sysmiss | 779 |