| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1611 |
56.1%
|
| 2 | Once or twice a year | 750 |
26.1%
|
| 3 | Monthly | 255 |
8.9%
|
| 4 | More often than monthly | 258 |
9%
|
| Sysmiss | 30 |