| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 178 |
23.4%
|
| 2 | no | 560 |
73.6%
|
| 3 | (dk) | 21 |
2.8%
|
| 4 | (ref) | 2 |
0.3%
|
| Sysmiss | 239 |