| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 15 |
88.2%
|
| 2 | Some difficulty | 1 |
5.9%
|
| 3 | A lot of difficulty | 1 |
5.9%
|
| 4 | Cannot walk 500m at all | 0 |
0%
|
| Sysmiss | 2633 |