| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 13 |
0.3%
|
| 1 | YES | 990 |
19.6%
|
| 2 | NO | 3856 |
76.3%
|
| 7 | NOT APPLICABLE | 198 |
3.9%
|
| Sysmiss | 5620 |