| Value | Category | Cases | |
|---|---|---|---|
| 1 | none | 972 |
17.8%
|
| 2 | mild | 288 |
5.3%
|
| 3 | moderate | 89 |
1.6%
|
| 4 | severe | 28 |
0.5%
|
| 5 | extreme /cannot do | 5 |
0.1%
|
| 7 | 1 |
0%
|
|
| 9 | 4085 |
74.7%
|
|
| 97 | 1 |
0%
|
|
| Sysmiss | 1 |