| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 892 |
90.6%
|
| 2 | Mild | 60 |
6.1%
|
| 3 | Moderate | 21 |
2.1%
|
| 4 | Severe | 11 |
1.1%
|
| 5 | Extreme | 1 |
0.1%
|
| Sysmiss | 2953 |