| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 18 |
1.8%
|
| 2 | Mild | 44 |
4.4%
|
| 3 | Moderate | 168 |
17%
|
| 4 | Severe | 545 |
55%
|
| 5 | Extreme | 216 |
21.8%
|
| Sysmiss | 2947 |