| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 0 |
0%
|
| 1 | YES | 274 |
6.2%
|
| 2 | NO | 3653 |
82.9%
|
| 7 | NOT APPLICABLE | 478 |
10.9%
|
| Sysmiss | 4751 |