| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 60 |
3.1%
|
| 2 | Mild | 100 |
5.1%
|
| 3 | Moderate | 298 |
15.2%
|
| 4 | Severe | 890 |
45.5%
|
| 5 | Extreme | 609 |
31.1%
|
| Sysmiss | 1981 |