| Value | Category | Cases | |
|---|---|---|---|
| -9 | -9. Don't know | 4 |
19%
|
| -8 | -8. Refused | 15 |
71.4%
|
| 11 | 1 |
4.8%
|
|
| 18 | 1 |
4.8%
|
|
| Sysmiss | 978 |