| Value | Category | Cases | |
|---|---|---|---|
| 0 | negative | 3894 |
98.5%
|
| 1 | positive | 46 |
1.2%
|
| 3 | no present | 3 |
0.1%
|
| 4 | refused | 9 |
0.2%
|
| 6 | other | 1 |
0%
|
| Sysmiss | 8996 |