| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 144 |
26.6%
|
| 2 | no | 338 |
62.5%
|
| 3 | (dk) | 53 |
9.8%
|
| 4 | (ref) | 6 |
1.1%
|
| Sysmiss | 467 |