| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 8806 |
89.7%
|
| 2 | Some difficulty | 712 |
7.3%
|
| 3 | A lot of difficulty | 258 |
2.6%
|
| 4 | Cannot walk/ climb step at all | 44 |
0.4%
|
| Sysmiss | 3679 |