| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 8 |
0.8%
|
| 2 | Mild | 12 |
1.2%
|
| 3 | Moderate | 18 |
1.8%
|
| 4 | Severe | 183 |
18.5%
|
| 5 | Extreme | 766 |
77.6%
|
| Sysmiss | 2951 |