| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 3591 |
81.5%
|
| 2 | Mild | 358 |
8.1%
|
| 3 | Moderate | 275 |
6.2%
|
| 4 | Severe | 137 |
3.1%
|
| 5 | Extreme | 44 |
1%
|
| Sysmiss | 12 |