| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 12509 |
98%
|
| 2 | Yes - some difficulty | 222 |
1.7%
|
| 3 | Yes - a lot of difficulty | 32 |
0.3%
|
| 4 | Cannot perform activity at all | 2 |
0%
|
| Sysmiss | 2832 |