| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 635 |
57.9%
|
| 2 | SOME DIFFICULTY | 6 |
0.5%
|
| 4 | CANNOT WALK AT ALL | 2 |
0.2%
|
| 9 | NO RESPONSE | 1 |
0.1%
|
| Sysmiss | 452 |
41.2%
|