| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 6 |
7.8%
|
| 2 | no | 69 |
89.6%
|
| 3 | (dk) | 2 |
2.6%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 923 |