| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 30 |
52.6%
|
| 2 | no | 24 |
42.1%
|
| 3 | (dk) | 1 |
1.8%
|
| 4 | (ref) | 2 |
3.5%
|
| Sysmiss | 945 |