| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 51 |
6.2%
|
| 2 | no | 767 |
93.1%
|
| 3 | (dk) | 3 |
0.4%
|
| 4 | (ref) | 3 |
0.4%
|
| Sysmiss | 198 |