| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 12966 |
88.3%
|
| 2 | SOME DIFFICULTY | 867 |
5.9%
|
| 3 | A LOT OF DIFFICULTY | 317 |
2.2%
|
| 4 | CANNOT WALK 100 M AT ALL | 107 |
0.7%
|
| 9 | NO RESPONSE | 16 |
0.1%
|
| Sysmiss | 417 |
2.8%
|