| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 114 |
13.2%
|
| 2 | no | 738 |
85.2%
|
| 3 | (dk) | 12 |
1.4%
|
| 4 | (ref) | 2 |
0.2%
|
| Sysmiss | 135 |