| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 3495 |
13.4%
|
| 2 | no | 22516 |
86.1%
|
| 3 | (dk) | 96 |
0.4%
|
| 4 | (ref) | 39 |
0.1%
|
| Sysmiss | 120542 |