| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 316 |
71.2%
|
| 2 | no | 122 |
27.5%
|
| 3 | (dk) | 2 |
0.5%
|
| 4 | (ref) | 4 |
0.9%
|
| Sysmiss | 556 |