| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 522 |
63.6%
|
| 2 | no | 288 |
35.1%
|
| 3 | (dk) | 2 |
0.2%
|
| 4 | (ref) | 9 |
1.1%
|
| Sysmiss | 179 |