| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 6603 |
77.7%
|
| 1 | Yes | 1824 |
21.5%
|
| 8 | Unknown | 0 |
0%
|
| 9 | Missing | 66 |
0.8%
|
| Sysmiss | 4418 |