| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 711 |
80.3%
|
| 2 | no | 170 |
19.2%
|
| 3 | (dk) | 1 |
0.1%
|
| 4 | (ref) | 3 |
0.3%
|
| Sysmiss | 122 |