| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 14 |
7.5%
|
| 2 | no | 171 |
91.4%
|
| 3 | (dk) | 1 |
0.5%
|
| 4 | (ref) | 1 |
0.5%
|
| Sysmiss | 813 |