| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 2201 |
69.7%
|
| 2 | SOME DIFFICULTY | 273 |
8.6%
|
| 3 | A LOT OF DIFFICULTY | 19 |
0.6%
|
| 4 | CANNOT WALK/CLIMB STEPS AT ALL | 1 |
0%
|
| 9 | NO RESPONSE | 3 |
0.1%
|
| Sysmiss | 660 |
20.9%
|