| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 390 |
39.8%
|
| 2 | no | 469 |
47.8%
|
| 3 | (dk) | 110 |
11.2%
|
| 4 | (ref) | 12 |
1.2%
|
| Sysmiss | 20 |