| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 26 |
9.8%
|
| 2 | no | 225 |
85.2%
|
| 3 | (dk) | 6 |
2.3%
|
| 4 | (ref) | 7 |
2.7%
|
| Sysmiss | 737 |