| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 185 |
21.4%
|
| 2 | no | 643 |
74.2%
|
| 3 | (dk) | 34 |
3.9%
|
| 4 | (ref) | 4 |
0.5%
|
| Sysmiss | 135 |