| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 0 |
0%
|
| 1 | YES | 49 |
1.1%
|
| 2 | NO | 4171 |
94.7%
|
| 7 | NOT APPLICABLE | 185 |
4.2%
|
| Sysmiss | 4751 |