| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 14 |
0.2%
|
| 1 | YES | 900 |
11.2%
|
| 2 | NO | 6979 |
87.2%
|
| 7 | NOT APPLICABLE | 113 |
1.4%
|
| Sysmiss | 5 |