| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 23 |
2.2%
|
| 2 | Mild | 71 |
6.7%
|
| 3 | Moderate | 226 |
21.3%
|
| 4 | Severe | 556 |
52.4%
|
| 5 | Extreme | 186 |
17.5%
|
| Sysmiss | 3355 |