| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 56 |
18.9%
|
| 2 | no | 232 |
78.1%
|
| 3 | (dk) | 7 |
2.4%
|
| 4 | (ref) | 2 |
0.7%
|
| Sysmiss | 703 |