| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 29 |
10.6%
|
| 2 | no | 233 |
85.3%
|
| 3 | (dk) | 11 |
4%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 727 |