| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 149 |
26.2%
|
| 2 | no | 415 |
72.9%
|
| 3 | (dk) | 4 |
0.7%
|
| 4 | (ref) | 1 |
0.2%
|
| Sysmiss | 431 |