| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 81 |
10.6%
|
| 2 | no | 674 |
88%
|
| 3 | (dk) | 9 |
1.2%
|
| 4 | (ref) | 2 |
0.3%
|
| Sysmiss | 234 |