| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1992 |
56%
|
| 2 | SOME DIFFICULTY | 21 |
0.6%
|
| 3 | A LOT OF DIFFICULTY | 3 |
0.1%
|
| 4 | CANNOT WALK AT ALL | 2 |
0.1%
|
| 9 | NO RESPONSE | 3 |
0.1%
|
| Sysmiss | 1539 |
43.2%
|