| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3640 |
96.4%
|
| 2 | SOME DIFFICULTY | 70 |
1.9%
|
| 3 | A LOT OF DIFFICULTY | 3 |
0.1%
|
| 4 | CANNOT WALK 100 M/Y AT ALL | 2 |
0.1%
|
| 9 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 60 |
1.6%
|