| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1158 |
58.9%
|
| 2 | SOME DIFFICULTY | 11 |
0.6%
|
| 4 | CANNOT WALK AT ALL | 1 |
0.1%
|
| Sysmiss | 797 |
40.5%
|