| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 492 |
72.7%
|
| 2 | no | 181 |
26.7%
|
| 3 | (dk) | 3 |
0.4%
|
| 4 | (ref) | 1 |
0.1%
|
| Sysmiss | 323 |