| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 0 |
0%
|
| 1 | YES | 1420 |
22.5%
|
| 2 | NO | 4531 |
71.8%
|
| 7 | NOT APPLICABLE | 359 |
5.7%
|
| Sysmiss | 1 |