| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 283 |
34.6%
|
| 2 | no | 461 |
56.4%
|
| 3 | (dk) | 72 |
8.8%
|
| 4 | (ref) | 2 |
0.2%
|
| Sysmiss | 182 |