| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1861 |
59.1%
|
| 2 | Once or twice a year | 751 |
23.9%
|
| 3 | Monthly | 285 |
9.1%
|
| 4 | More often than monthly | 250 |
7.9%
|
| Sysmiss | 17 |