| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 4488 |
90.1%
|
| 2 | SOME DIFFICULTY | 380 |
7.6%
|
| 3 | A LOT OF DIFFICULTY | 51 |
1%
|
| 4 | CANNOT WALK 100 M/Y AT ALL | 12 |
0.2%
|
| 9 | NO RESPONSE | 3 |
0.1%
|
| Sysmiss | 49 |
1%
|