| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 80 |
7.1%
|
| 2 | Mild | 371 |
33%
|
| 3 | Moderate | 505 |
45%
|
| 4 | Severe | 135 |
12%
|
| 5 | Extreme | 32 |
2.8%
|
| Sysmiss | 3294 |