| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 166 |
23.1%
|
| 2 | no | 412 |
57.2%
|
| 3 | (dk) | 139 |
19.3%
|
| 4 | (ref) | 3 |
0.4%
|
| Sysmiss | 280 |