| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 18115 |
97.5%
|
| 2 | Yes - Some difficulty | 366 |
2%
|
| 3 | Yes - A lot of difficulty | 78 |
0.4%
|
| 4 | Cannot perform activity at all | 13 |
0.1%
|
| Sysmiss | 292 |