| Value | Category | Cases | |
|---|---|---|---|
| 1 | none | 3993 |
67.2%
|
| 2 | mild | 1334 |
22.5%
|
| 3 | moderate | 488 |
8.2%
|
| 4 | severe | 96 |
1.6%
|
| 5 | extreme/cannot do | 29 |
0.5%
|
| Sysmiss | 545 |