| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 5350 |
52.7%
|
| 2 | SOME DIFFICULTY | 695 |
6.8%
|
| 3 | A LOT OF DIFFICULTY | 71 |
0.7%
|
| 4 | CANNOT LEARN THINGS AT ALL | 56 |
0.6%
|
| 9 | NO RESPONSE | 14 |
0.1%
|
| Sysmiss | 3970 |
39.1%
|