| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 72 |
7.6%
|
| 2 | no | 860 |
90.8%
|
| 3 | (dk) | 14 |
1.5%
|
| 4 | (ref) | 1 |
0.1%
|
| Sysmiss | 54 |