| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 25 |
52.1%
|
| 2 | no | 20 |
41.7%
|
| 3 | (dk) | 2 |
4.2%
|
| 4 | (ref) | 1 |
2.1%
|
| Sysmiss | 954 |