| Value | Category | Cases | |
|---|---|---|---|
| -9 | -9. Don't know | 6 |
20.7%
|
| -8 | -8. Refused | 21 |
72.4%
|
| 6 | 1 |
3.4%
|
|
| 11 | 1 |
3.4%
|
|
| Sysmiss | 970 |