| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 3156 |
71.6%
|
| 2 | Mild | 708 |
16.1%
|
| 3 | Moderate | 382 |
8.7%
|
| 4 | Severe | 124 |
2.8%
|
| 5 | Extreme | 38 |
0.9%
|
| Sysmiss | 9 |