| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 508 |
90.6%
|
| 2 | no | 47 |
8.4%
|
| 3 | (dk) | 5 |
0.9%
|
| 4 | (ref) | 1 |
0.2%
|
| Sysmiss | 445 |