| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 17 |
0.2%
|
| 2 | SOME DIFFICULTY | 2 |
0%
|
| 3 | A LOT OF DIFFICULTY | 3 |
0%
|
| 4 | CANNOT WALK 100 M M/Y AT ALL | 5 |
0.1%
|
| Sysmiss | 7128 |
99.6%
|