| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 4 |
16.7%
|
| 2 | no | 19 |
79.2%
|
| 3 | (dk) | 0 |
0%
|
| 4 | (ref) | 1 |
4.2%
|
| Sysmiss | 976 |