| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 28 |
1.4%
|
| 2 | Mild | 41 |
2.1%
|
| 3 | Moderate | 277 |
14.2%
|
| 4 | Severe | 990 |
50.6%
|
| 5 | Extreme | 621 |
31.7%
|
| Sysmiss | 1981 |