| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3470 |
82.2%
|
| 2 | SOME DIFFICULTY | 226 |
5.4%
|
| 3 | A LOT OF DIFFICULTY | 33 |
0.8%
|
| 4 | CANNOT LEARN THINGS AT ALL | 10 |
0.2%
|
| 9 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 481 |
11.4%
|