| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 9651 |
96.5%
|
| 2 | SOME DIFFICULTY | 300 |
3%
|
| 3 | A LOT OF DIFFICULTY | 33 |
0.3%
|
| 4 | CANNOT WALK AT ALL | 12 |
0.1%
|
| 9 | NO RESPONSE | 2 |
0%
|
| Sysmiss | 6691 |