| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 9 |
16.4%
|
| 2 | no | 41 |
74.5%
|
| 3 | (dk) | 4 |
7.3%
|
| 4 | (ref) | 1 |
1.8%
|
| Sysmiss | 945 |