| Value | Category | Cases | |
|---|---|---|---|
| 0 | No - no difficulty | 1121471 |
98.3%
|
| 1 | Some difficulty | 7609 |
0.7%
|
| 2 | A lot of difficulty | 10325 |
0.9%
|
| 3 | Cannot walk or climbing steps at all | 1825 |
0.2%
|
| 9 | 27 |
0%
|
|
| Sysmiss | 171758 |