| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 0 |
0%
|
| 1 | YES | 155 |
3.5%
|
| 2 | NO | 3933 |
89.3%
|
| 7 | NOT APPLICABLE | 317 |
7.2%
|
| Sysmiss | 4751 |