| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 17 |
0.2%
|
| -7 | DON'T KNOW | 2808 |
26.3%
|
| 1 | YES | 5907 |
55.4%
|
| 2 | NO | 1940 |
18.2%
|
| Sysmiss | 5 |