| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 12708 |
99.5%
|
| 2 | Yes - some difficulty | 49 |
0.4%
|
| 3 | Yes - a lot of difficulty | 6 |
0%
|
| 4 | Cannot perform activity at all | 5 |
0%
|
| Sysmiss | 2829 |