| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 132 |
14.4%
|
| 2 | no | 740 |
80.8%
|
| 3 | (dk) | 42 |
4.6%
|
| 4 | (ref) | 2 |
0.2%
|
| Sysmiss | 84 |