| Value | Category | Cases | |
|---|---|---|---|
| 2 | SOME DIFFICULTY | 9 |
0.4%
|
| 3 | A LOT OF DIFFICULTY | 1 |
0%
|
| 4 | CANNOT WALK AT ALL | 2 |
0.1%
|
| Sysmiss | 2177 |
99.5%
|