| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 20 |
1.8%
|
| 2 | Mild | 19 |
1.7%
|
| 3 | Moderate | 45 |
4.1%
|
| 4 | Severe | 190 |
17.2%
|
| 5 | Extreme | 829 |
75.2%
|
| Sysmiss | 3314 |