| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 11914 |
81.1%
|
| 2 | SOME DIFFICULTY | 1302 |
8.9%
|
| 3 | A LOT OF DIFFICULTY | 437 |
3%
|
| 4 | CANNOT WALK 500 M AT ALL | 178 |
1.2%
|
| 9 | NO RESPONSE | 18 |
0.1%
|
| Sysmiss | 841 |
5.7%
|