| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 12411 |
97.2%
|
| 2 | Yes - some difficulty | 299 |
2.3%
|
| 3 | Yes - a lot of difficulty | 50 |
0.4%
|
| 4 | Cannot perform activity at all | 7 |
0.1%
|
| Sysmiss | 2830 |