| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 639 |
65.1%
|
| 2 | no | 268 |
27.3%
|
| 3 | (dk) | 71 |
7.2%
|
| 4 | (ref) | 3 |
0.3%
|
| Sysmiss | 20 |