| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 25 |
17.5%
|
| 2 | no | 109 |
76.2%
|
| 3 | (dk) | 7 |
4.9%
|
| 4 | (ref) | 2 |
1.4%
|
| Sysmiss | 860 |