| Value | Category | Cases | |
|---|---|---|---|
| 0 | Negative | 6414 |
68.8%
|
| 1 | Indeterminate | 4 |
0%
|
| 2 | Positive | 2828 |
30.4%
|
| 9 | Unknown | 70 |
0.8%
|
| Sysmiss | 3578 |