| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1961 |
55.1%
|
| 2 | SOME DIFFICULTY | 71 |
2%
|
| 3 | A LOT OF DIFFICULTY | 8 |
0.2%
|
| 4 | CANNOT LEARN THINGS AT ALL | 9 |
0.3%
|
| 9 | NO RESPONSE | 3 |
0.1%
|
| Sysmiss | 1508 |
42.4%
|