| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 15076 |
89.9%
|
| 2 | SOME DIFFICULTY | 1165 |
6.9%
|
| 3 | A LOT OF DIFFICULTY | 449 |
2.7%
|
| 4 | CANNOT WALK 100 M AT ALL | 57 |
0.3%
|
| 9 | NO RESPONSE | 24 |
0.1%
|
| Sysmiss | 773 |