| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 455 |
6.1%
|
| 2 | no | 316 |
4.2%
|
| 8 | dk | 1 |
0%
|
| 9 | missing | 7 |
0.1%
|
| Sysmiss | 6720 |
89.6%
|