| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 0 |
0%
|
| 1 | YES | 1439 |
22.8%
|
| 2 | NO | 4321 |
68.5%
|
| 7 | NOT APPLICABLE | 550 |
8.7%
|
| Sysmiss | 1 |