| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 2612 |
66.6%
|
| 2 | Mild | 643 |
16.4%
|
| 3 | Moderate | 467 |
11.9%
|
| 4 | Severe | 179 |
4.6%
|
| 5 | Extreme | 20 |
0.5%
|
| Sysmiss | 17 |