| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 20 |
1%
|
| 2 | Mild | 69 |
3.5%
|
| 3 | Moderate | 149 |
7.6%
|
| 4 | Severe | 730 |
37.4%
|
| 5 | Extreme | 984 |
50.4%
|
| Sysmiss | 1986 |