| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 83 |
11.1%
|
| 2 | no | 639 |
85.2%
|
| 3 | (dk) | 27 |
3.6%
|
| 4 | (ref) | 1 |
0.1%
|
| Sysmiss | 250 |