| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 132 |
16.4%
|
| 2 | no | 650 |
80.5%
|
| 3 | (dk) | 3 |
0.4%
|
| 4 | (ref) | 22 |
2.7%
|
| Sysmiss | 201 |