| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 36 |
1.8%
|
| 2 | Mild | 150 |
7.7%
|
| 3 | Moderate | 496 |
25.4%
|
| 4 | Severe | 855 |
43.8%
|
| 5 | Extreme | 413 |
21.2%
|
| Sysmiss | 1988 |