| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 479 |
88.9%
|
| 2 | no | 54 |
10%
|
| 3 | (dk) | 4 |
0.7%
|
| 4 | (ref) | 2 |
0.4%
|
| Sysmiss | 461 |