| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 570 |
66.4%
|
| 1 | Yes | 285 |
33.2%
|
| 8 | Unknown | 4 |
0.5%
|
| 9 | Missing | 0 |
0%
|
| Sysmiss | 6 |