| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 40 |
5.7%
|
| 2 | no | 659 |
94%
|
| 3 | (dk) | 2 |
0.3%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 299 |