| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 14 |
0.3%
|
| 1 | YES | 229 |
4.5%
|
| 2 | NO | 4676 |
92.5%
|
| 7 | NOT APPLICABLE | 138 |
2.7%
|
| Sysmiss | 5620 |