| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 892 |
90.5%
|
| 2 | Mild | 53 |
5.4%
|
| 3 | Moderate | 22 |
2.2%
|
| 4 | Severe | 13 |
1.3%
|
| 5 | Extreme | 6 |
0.6%
|
| Sysmiss | 2952 |