| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 765 |
78.6%
|
| 2 | no | 190 |
19.5%
|
| 3 | (dk) | 1 |
0.1%
|
| 4 | (ref) | 17 |
1.7%
|
| Sysmiss | 36 |