| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 13 |
0.1%
|
| -7 | DON'T KNOW | 2738 |
25.7%
|
| 1 | YES | 5625 |
52.7%
|
| 2 | NO | 2295 |
21.5%
|
| Sysmiss | 6 |