| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 749 |
87.2%
|
| 1 | Yes | 30 |
3.5%
|
| 8 | Unknown | 80 |
9.3%
|
| 9 | Missing | 0 |
0%
|
| Sysmiss | 6 |