| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 1020 |
8.2%
|
| 2 | no | 1789 |
14.3%
|
| 8 | dk | 6 |
0%
|
| 9 | missing | 35 |
0.3%
|
| Sysmiss | 9638 |
77.2%
|