| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 36 |
1.8%
|
| 2 | Mild | 128 |
6.6%
|
| 3 | Moderate | 484 |
24.8%
|
| 4 | Severe | 977 |
50.1%
|
| 5 | Extreme | 325 |
16.7%
|
| Sysmiss | 1988 |