| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3957 |
44.4%
|
| 2 | SOME DIFFICULTY | 1259 |
14.1%
|
| 3 | A LOT OF DIFFICULTY | 154 |
1.7%
|
| 4 | CANNOT LEARN THINGS AT ALL | 36 |
0.4%
|
| 9 | NO RESPONSE | 8 |
0.1%
|
| Sysmiss | 3489 |
39.2%
|