| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 15 |
0.1%
|
| -7 | DON'T KNOW | 301 |
2.3%
|
| 1 | YES | 3941 |
29.7%
|
| 2 | NO | 8995 |
67.9%
|
| Sysmiss | 11 |