| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 15003 |
97%
|
| 2 | SOME DIFFICULTY | 373 |
2.4%
|
| 3 | A LOT OF DIFFICULTY | 58 |
0.4%
|
| 4 | CANNOT WALK 100 M/Y AT ALL | 30 |
0.2%
|
| 9 | NO RESPONSE | 6 |
0%
|
| Sysmiss | 143 |