| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 1143 |
69.8%
|
| 2 | no | 454 |
27.7%
|
| 7 | dk | 39 |
2.4%
|
| 8 | ra | 1 |
0.1%
|
| Sysmiss | 518 |