| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 525 |
56%
|
| 2 | Very mild | 244 |
26%
|
| 3 | Mild | 101 |
10.8%
|
| 4 | Moderate | 37 |
3.9%
|
| 5 | Severe | 25 |
2.7%
|
| 6 | Very severe | 6 |
0.6%
|