| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 58 |
8.5%
|
| 2 | no | 626 |
91.3%
|
| 3 | (dk) | 1 |
0.1%
|
| 4 | (ref) | 1 |
0.1%
|
| Sysmiss | 314 |