| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 33 |
45.8%
|
| 2 | no | 31 |
43.1%
|
| 3 | (dk) | 6 |
8.3%
|
| 4 | (ref) | 2 |
2.8%
|
| Sysmiss | 928 |