| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 39 |
10.5%
|
| 2 | no | 328 |
88.4%
|
| 3 | (dk) | 2 |
0.5%
|
| 4 | (ref) | 2 |
0.5%
|
| Sysmiss | 631 |