| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 156 |
2.3%
|
| 2 | SOME DIFFICULTY | 24 |
0.4%
|
| 3 | A LOT OF DIFFICULTY | 3 |
0%
|
| 4 | CANNOT WALK AT ALL | 5 |
0.1%
|
| Sysmiss | 6561 |
97.2%
|