| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 100 |
23.1%
|
| 2 | no | 311 |
71.8%
|
| 3 | (dk) | 20 |
4.6%
|
| 4 | (ref) | 2 |
0.5%
|
| Sysmiss | 567 |