| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 40 |
12.2%
|
| 2 | no | 287 |
87.2%
|
| 3 | (dk) | 0 |
0%
|
| 4 | (ref) | 2 |
0.6%
|
| Sysmiss | 671 |