| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 40 |
0.4%
|
| 1 | YES | 1353 |
12.7%
|
| 2 | NO | 8531 |
79.9%
|
| 7 | NOT APPLICABLE | 751 |
7%
|
| Sysmiss | 2 |