| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 106 |
18.3%
|
| 2 | no | 452 |
78.2%
|
| 3 | (dk) | 19 |
3.3%
|
| 4 | (ref) | 1 |
0.2%
|
| Sysmiss | 422 |