| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 4 |
0%
|
| 1 | YES | 4868 |
36.7%
|
| 2 | NO | 8162 |
61.6%
|
| 7 | NOT APPLICABLE | 226 |
1.7%
|
| Sysmiss | 3 |