| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 12657 |
99.1%
|
| 2 | Yes - some difficulty | 84 |
0.7%
|
| 3 | Yes - a lot of difficulty | 19 |
0.1%
|
| 4 | Cannot perform activity at all | 8 |
0.1%
|
| Sysmiss | 2829 |