| Value | Category | Cases | |
|---|---|---|---|
| 0 | Negative | 431 |
92.1%
|
| 1 | Positive | 37 |
7.9%
|
| 7 | N/A | 0 |
0%
|
| 8 | DK | 0 |
0%
|
| Sysmiss | 44 |