| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 23 |
2.5%
|
| 2 | Mild | 255 |
27.2%
|
| 3 | Moderate | 484 |
51.7%
|
| 4 | Severe | 130 |
13.9%
|
| 5 | Extreme | 45 |
4.8%
|
| Sysmiss | 3001 |