| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 61 |
11.3%
|
| 2 | no | 468 |
86.8%
|
| 3 | (dk) | 10 |
1.9%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 523 |