| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 104 |
14.3%
|
| 2 | no | 594 |
81.9%
|
| 3 | (dk) | 25 |
3.4%
|
| 4 | (ref) | 2 |
0.3%
|
| Sysmiss | 275 |