| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 170 |
37.1%
|
| 2 | no | 249 |
54.4%
|
| 3 | (dk) | 35 |
7.6%
|
| 4 | (ref) | 4 |
0.9%
|
| Sysmiss | 542 |