| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 20 |
1.9%
|
| 2 | Mild | 56 |
5.3%
|
| 3 | Moderate | 245 |
23.1%
|
| 4 | Severe | 589 |
55.5%
|
| 5 | Extreme | 151 |
14.2%
|
| Sysmiss | 3356 |