| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 23 |
4.9%
|
| 2 | no | 443 |
94.9%
|
| 3 | (dk) | 1 |
0.2%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 533 |