| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 28 |
1.4%
|
| 2 | Mild | 72 |
3.7%
|
| 3 | Moderate | 164 |
8.4%
|
| 4 | Severe | 780 |
39.8%
|
| 5 | Extreme | 915 |
46.7%
|
| Sysmiss | 1979 |