| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 13 |
7.4%
|
| 2 | no | 161 |
91.5%
|
| 3 | (dk) | 1 |
0.6%
|
| 4 | (ref) | 1 |
0.6%
|
| Sysmiss | 825 |