| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 7103 |
93.1%
|
| 2 | SOME DIFFICULTY | 181 |
2.4%
|
| 3 | A LOT OF DIFFICULTY | 19 |
0.2%
|
| 4 | CANNOT WALK 100 ???ERS AT ALL | 2 |
0%
|
| 9 | NO RESPONSE | 3 |
0%
|
| Sysmiss | 320 |
4.2%
|