| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 9 |
5.9%
|
| 2 | no | 143 |
93.5%
|
| 3 | (dk) | 1 |
0.7%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 847 |