| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 13 |
0.2%
|
| 1 | YES | 782 |
9.8%
|
| 2 | NO | 6992 |
87.3%
|
| 7 | NOT APPLICABLE | 218 |
2.7%
|
| Sysmiss | 6 |