| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 153 |
22.3%
|
| 2 | no | 471 |
68.7%
|
| 3 | (dk) | 62 |
9%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 314 |