| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3982 |
79.9%
|
| 2 | SOME DIFFICULTY | 793 |
15.9%
|
| 3 | A LOT OF DIFFICULTY | 136 |
2.7%
|
| 4 | CANNOT WALK 100 M/Y AT ALL | 21 |
0.4%
|
| 9 | NO RESPONSE | 2 |
0%
|
| Sysmiss | 49 |
1%
|