| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 19817 |
97.8%
|
| 2 | Yes - Some difficulty | 345 |
1.7%
|
| 3 | Yes - A lot of difficulty | 89 |
0.4%
|
| 4 | Cannot perform activity at all | 14 |
0.1%
|
| Sysmiss | 3520 |