| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1936 |
85.2%
|
| 2 | SOME DIFFICULTY | 256 |
11.3%
|
| 3 | A LOT OF DIFFICULTY | 29 |
1.3%
|
| 4 | CANNOT WALK 500 M AT ALL | 18 |
0.8%
|
| 9 | NO RESPONSE | 3 |
0.1%
|
| Sysmiss | 30 |
1.3%
|