| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 164 |
0.9%
|
| 2 | SOME DIFFICULTY | 46 |
0.3%
|
| 3 | A LOT OF DIFFICULTY | 19 |
0.1%
|
| 4 | CANNOT WALK AT ALL | 19 |
0.1%
|
| Sysmiss | 18064 |
98.6%
|