| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3636 |
58%
|
| 2 | SOME DIFFICULTY | 67 |
1.1%
|
| 3 | A LOT OF DIFFICULTY | 5 |
0.1%
|
| 4 | CANNOT WALK AT ALL | 1 |
0%
|
| 9 | NO RESPONSE | 2 |
0%
|
| Sysmiss | 2558 |
40.8%
|