| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 471 |
74.8%
|
| 2 | Only in 1 or 2 months | 9 |
1.4%
|
| 3 | Almost every month | 12 |
1.9%
|
| 4 | Some months, but not every month | 135 |
21.4%
|
| 5 | Every month | 3 |
0.5%
|
| Sysmiss | 203 |