| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 142 |
6.2%
|
| 2 | No | 380 |
16.5%
|
| 3 | Unknown | 757 |
32.8%
|
| 4 | Known positive | 1027 |
44.5%
|
| Sysmiss | 245 |