| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 19755 |
98%
|
| 2 | Yes - Some difficulty | 326 |
1.6%
|
| 3 | Yes - A lot of difficulty | 62 |
0.3%
|
| 4 | Cannot perform activity at all | 12 |
0.1%
|
| Sysmiss | 3238 |