| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 910 |
93.5%
|
| 2 | no | 34 |
3.5%
|
| 3 | (dk) | 7 |
0.7%
|
| 4 | (ref) | 22 |
2.3%
|
| Sysmiss | 36 |