| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1286 |
87%
|
| 2 | SOME DIFFICULTY | 125 |
8.5%
|
| 3 | A LOT OF DIFFICULTY | 15 |
1%
|
| 4 | CANNOT LEAR THINGS AT ALL | 5 |
0.3%
|
| Sysmiss | 48 |
3.2%
|