| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 383 |
83.4%
|
| 2 | Some difficulty | 49 |
10.7%
|
| 3 | A lot of difficulty | 9 |
2%
|
| 4 | Cannot do at all | 18 |
3.9%
|
| Sysmiss | 17301 |