| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 69 |
11.9%
|
| 2 | no | 499 |
86.3%
|
| 3 | (dk) | 8 |
1.4%
|
| 4 | (ref) | 2 |
0.3%
|
| Sysmiss | 422 |