| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 2 |
0.2%
|
| 2 | Low | 93 |
7.9%
|
| 3 | High | 495 |
41.8%
|
| 4 | Certain | 591 |
50%
|
| 9 | Missing | 2 |
0.2%
|