| Value | Category | Cases | |
|---|---|---|---|
| 2 | SOME DIFFICULTY | 13 |
0.5%
|
| 3 | A LOT OF DIFFICULTY | 2 |
0.1%
|
| 4 | CANNOT WALK AT ALL | 3 |
0.1%
|
| Sysmiss | 2806 |
99.4%
|