| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1664 |
57.1%
|
| 2 | Once or twice a year | 724 |
24.9%
|
| 3 | Monthly | 292 |
10%
|
| 4 | More often than monthly | 233 |
8%
|
| Sysmiss | 26 |