| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 9 |
50%
|
| 2 | no | 7 |
38.9%
|
| 3 | (dk) | 1 |
5.6%
|
| 4 | (ref) | 1 |
5.6%
|
| Sysmiss | 982 |