| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 699 |
83.3%
|
| 2 | SOME DIFFICULTY | 63 |
7.5%
|
| 3 | A LOT OF DIFFICULTY | 6 |
0.7%
|
| 4 | CANNOT LEARN THINGS AT ALL | 3 |
0.4%
|
| Sysmiss | 68 |
8.1%
|