| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 601 |
92.9%
|
| 2 | no | 27 |
4.2%
|
| 3 | (dk) | 1 |
0.2%
|
| 4 | (ref) | 18 |
2.8%
|
| Sysmiss | 361 |