| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 66 |
0.7%
|
| 2 | SOME DIFFICULTY | 10 |
0.1%
|
| 3 | A LOT OF DIFFICULTY | 4 |
0%
|
| 4 | CANNOT WALK AT ALL | 1 |
0%
|
| Sysmiss | 8822 |
99.1%
|