| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 30 |
12.7%
|
| 2 | no | 200 |
84.4%
|
| 3 | (dk) | 6 |
2.5%
|
| 4 | (ref) | 1 |
0.4%
|
| Sysmiss | 763 |