| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 870 |
48.8%
|
| 2 | SOME DIFFICULTY | 44 |
2.5%
|
| 3 | A LOT OF DIFFICULTY | 8 |
0.4%
|
| 4 | CANNOT LEARN THINGS AT ALL | 1 |
0.1%
|
| Sysmiss | 858 |
48.2%
|