| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 19 |
30.6%
|
| 2 | no | 37 |
59.7%
|
| 3 | (dk) | 5 |
8.1%
|
| 4 | (ref) | 1 |
1.6%
|
| Sysmiss | 939 |