| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 44 |
21%
|
| 2 | no | 133 |
63.3%
|
| 3 | (dk) | 13 |
6.2%
|
| 4 | (ref) | 20 |
9.5%
|
| Sysmiss | 790 |