| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 69 |
14.3%
|
| 2 | no | 369 |
76.2%
|
| 3 | (dk) | 45 |
9.3%
|
| 4 | (ref) | 1 |
0.2%
|
| Sysmiss | 516 |