| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 39 |
0.4%
|
| 1 | YES | 223 |
2.1%
|
| 2 | NO | 8110 |
76%
|
| 7 | NOT APPLICABLE | 2304 |
21.6%
|
| Sysmiss | 1 |