| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 143 |
35.9%
|
| 2 | no | 250 |
62.8%
|
| 3 | (dk) | 4 |
1%
|
| 4 | (ref) | 1 |
0.3%
|
| Sysmiss | 602 |