| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 88 |
17.9%
|
| 2 | no | 390 |
79.3%
|
| 3 | (dk) | 9 |
1.8%
|
| 4 | (ref) | 5 |
1%
|
| Sysmiss | 508 |