| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 156 |
20.9%
|
| 2 | no | 553 |
73.9%
|
| 3 | (dk) | 39 |
5.2%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 252 |