| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 753 |
93.3%
|
| 2 | no | 36 |
4.5%
|
| 3 | (dk) | 1 |
0.1%
|
| 4 | (ref) | 17 |
2.1%
|
| Sysmiss | 201 |