| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 2243 |
83.4%
|
| 2 | SOME DIFFICULTY | 103 |
3.8%
|
| 3 | A LOT OF DIFFICULTY | 4 |
0.1%
|
| 4 | CANNOT WALK 500 M AT ALL | 3 |
0.1%
|
| 9 | NO RESPONSE | 12 |
0.4%
|
| Sysmiss | 326 |
12.1%
|