| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 42 |
2.1%
|
| 2 | Mild | 81 |
4.1%
|
| 3 | Moderate | 272 |
13.9%
|
| 4 | Severe | 1011 |
51.5%
|
| 5 | Extreme | 556 |
28.3%
|
| Sysmiss | 1976 |