| Value | Category | Cases | |
|---|---|---|---|
| 1 | Light | 373 |
18.7%
|
| 2 | Moderatee | 935 |
47%
|
| 3 | Severe | 675 |
33.9%
|
| 9 | 7 |
0.4%
|
|
| Sysmiss | 17848 |