| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 956 |
89.8%
|
| 2 | Mild | 69 |
6.5%
|
| 3 | Moderate | 24 |
2.3%
|
| 4 | Severe | 13 |
1.2%
|
| 5 | Extreme | 2 |
0.2%
|
| Sysmiss | 3353 |