| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 31850 |
91.1%
|
| 2 | Some difficulty | 2431 |
7%
|
| 3 | A lot of difficulty | 611 |
1.7%
|
| 4 | Cannot walk 500 m at all | 60 |
0.2%
|
| 9 | No response | 13 |
0%
|
| Sysmiss | 2087 |