| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 158 |
21.9%
|
| 2 | no | 513 |
71.3%
|
| 3 | (dk) | 44 |
6.1%
|
| 4 | (ref) | 5 |
0.7%
|
| Sysmiss | 280 |