| Value | Category | Cases | |
|---|---|---|---|
| 1 | none | 2000 |
37.6%
|
| 2 | mild | 1470 |
27.6%
|
| 3 | moderate | 1472 |
27.7%
|
| 4 | severe | 361 |
6.8%
|
| 5 | extreme/cannot do | 16 |
0.3%
|
| Sysmiss | 753 |