| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 135 |
20.6%
|
| 2 | no | 499 |
76.3%
|
| 3 | (dk) | 20 |
3.1%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 346 |