| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 8 |
20%
|
| 2 | no | 30 |
75%
|
| 3 | (dk) | 1 |
2.5%
|
| 4 | (ref) | 1 |
2.5%
|
| Sysmiss | 961 |