| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3847 |
98.9%
|
| 2 | SOME DIFFICULTY | 39 |
1%
|
| 3 | A LOT OF DIFFICULTY | 1 |
0%
|
| 4 | CANNOT BE UNDERSTOOD AT ALL | 3 |
0.1%
|
| 9 | NO RESPONSE | 0 |
0%
|
| Sysmiss | 7 |