| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 15 |
45.5%
|
| 2 | no | 16 |
48.5%
|
| 3 | (dk) | 1 |
3%
|
| 4 | (ref) | 1 |
3%
|
| Sysmiss | 967 |