| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 13844 |
90%
|
| 2 | SOME DIFFICULTY | 1336 |
8.7%
|
| 3 | A LOT OF DIFFICULTY | 162 |
1.1%
|
| 4 | CANNOT WALK 500 M/Y AT ALL | 21 |
0.1%
|
| 9 | NO RESPONSE | 19 |
0.1%
|
| Sysmiss | 231 |