| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 9 |
0.1%
|
| 1 | YES | 1310 |
16.4%
|
| 2 | NO | 6416 |
80.2%
|
| 7 | NOT APPLICABLE | 268 |
3.3%
|
| Sysmiss | 8 |