| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 133 |
16.2%
|
| 2 | no | 658 |
80.3%
|
| 3 | (dk) | 27 |
3.3%
|
| 4 | (ref) | 1 |
0.1%
|
| Sysmiss | 181 |