| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 322 |
70.2%
|
| 2 | Some difficulty | 101 |
22%
|
| 3 | A lot of difficulty | 26 |
5.7%
|
| 4 | Cannot do at all | 10 |
2.2%
|
| Sysmiss | 17301 |