| Value | Category | Cases | |
|---|---|---|---|
| 0 | Negative | 250 |
91.9%
|
| 1 | Positive | 17 |
6.3%
|
| 2 | Refuse to answer | 0 |
0%
|
| 8 | Unknown | 5 |
1.8%
|
| 9 | Missing | 0 | |
| Sysmiss | 3891 |