| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 579 |
67.4%
|
| 1 | Yes | 197 |
22.9%
|
| 8 | Unknown | 83 |
9.7%
|
| 9 | Missing | 0 |
0%
|
| Sysmiss | 6 |