| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 2541 |
74.9%
|
| 2 | SOME DIFFICULTY | 368 |
10.9%
|
| 3 | A LOT OF DIFFICULTY | 56 |
1.7%
|
| 4 | CANNOT WALK / CLIMB STEPS AT ALL | 1 |
0%
|
| 9 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 424 |
12.5%
|