| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 49 |
6.5%
|
| 2 | no | 687 |
91.6%
|
| 3 | (dk) | 13 |
1.7%
|
| 4 | (ref) | 1 |
0.1%
|
| Sysmiss | 250 |