| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 55 |
76.4%
|
| 2 | no | 14 |
19.4%
|
| 3 | (dk) | 1 |
1.4%
|
| 4 | (ref) | 2 |
2.8%
|
| Sysmiss | 929 |