| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 4016 |
80.6%
|
| 2 | SOME DIFFICULTY | 763 |
15.3%
|
| 3 | A LOT OF DIFFICULTY | 122 |
2.4%
|
| 4 | CANNOT WALK 100 M/Y AT ALL | 27 |
0.5%
|
| 9 | NO RESPONSE | 6 |
0.1%
|
| Sysmiss | 49 |
1%
|