| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 903 |
92.6%
|
| 2 | no | 65 |
6.7%
|
| 3 | (dk) | 4 |
0.4%
|
| 4 | (ref) | 3 |
0.3%
|
| Sysmiss | 30 |