| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1622 |
55.5%
|
| 2 | SOME DIFFICULTY | 43 |
1.5%
|
| 3 | A LOT OF DIFFICULTY | 4 |
0.1%
|
| 4 | CANNOT WALK AT ALL | 1 |
0%
|
| Sysmiss | 1255 |
42.9%
|