| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 18 |
0.9%
|
| 2 | Mild | 27 |
1.4%
|
| 3 | Moderate | 107 |
5.5%
|
| 4 | Severe | 632 |
32.3%
|
| 5 | Extreme | 1175 |
60%
|
| Sysmiss | 1979 |