| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 28 |
1.4%
|
| 2 | Mild | 88 |
4.5%
|
| 3 | Moderate | 288 |
14.7%
|
| 4 | Severe | 966 |
49.3%
|
| 5 | Extreme | 591 |
30.1%
|
| Sysmiss | 1977 |