| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 687 |
51.7%
|
| 2 | SOME DIFFICULTY | 9 |
0.7%
|
| 4 | CANNOT LEARN AT ALL | 2 |
0.2%
|
| 9 | NO RESPONSE | 13 |
1%
|
| Sysmiss | 618 |
46.5%
|