| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 6151 |
99.1%
|
| 2 | Yes - some difficulty | 39 |
0.6%
|
| 3 | Yes - a lot of difficulty | 11 |
0.2%
|
| 4 | Cannot perform activity at all | 7 |
0.1%
|
| Sysmiss | 1474 |