| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 104 |
17.7%
|
| 2 | no | 457 |
77.7%
|
| 3 | (dk) | 22 |
3.7%
|
| 4 | (ref) | 5 |
0.9%
|
| Sysmiss | 412 |