| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 15 |
65.2%
|
| 2 | Some difficulty | 2 |
8.7%
|
| 3 | A lot of difficulty | 4 |
17.4%
|
| 4 | Cannot walk 100m at all | 2 |
8.7%
|
| Sysmiss | 2627 |