| Value | Category | Cases | |
|---|---|---|---|
| 2 | SOME DIFFICULTY | 16 |
0.3%
|
| 3 | A LOT OF DIFFICULTY | 4 |
0.1%
|
| 4 | CANNOT WALK 500 M/Y AT ALL | 0 |
0%
|
| 9 | NO RESPONSE | 0 |
0%
|
| Sysmiss | 5340 |