| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 62 |
8.1%
|
| 2 | no | 680 |
89.1%
|
| 3 | (dk) | 17 |
2.2%
|
| 4 | (ref) | 4 |
0.5%
|
| Sysmiss | 237 |