| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 100 |
18.9%
|
| 2 | no | 424 |
80.3%
|
| 3 | (dk) | 1 |
0.2%
|
| 4 | (ref) | 3 |
0.6%
|
| Sysmiss | 472 |