| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3996 |
61.6%
|
| 2 | SOME DIFFICULTY | 568 |
8.8%
|
| 3 | A LOT OF DIFFICULTY | 178 |
2.7%
|
| 4 | CANNOT WALK AT ALL | 1 |
0%
|
| 9 | NO RESPONSE | 7 |
0.1%
|
| Sysmiss | 1733 |
26.7%
|