| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 2634 |
99%
|
| 2 | Some difficulty | 24 |
0.9%
|
| 3 | A lot of difficulty | 0 |
0%
|
| 4 | Cannot walk at all | 2 |
0.1%
|
| 9 | No response | 1 |
0%
|
| Sysmiss | 1993 |