| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 8 |
0.1%
|
| -7 | DON'T KNOW | 4065 |
30.7%
|
| 1 | YES | 6235 |
47%
|
| 2 | NO | 2948 |
22.2%
|
| Sysmiss | 7 |