| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 2137 |
94.1%
|
| 2 | SOME DIFFICULTY | 113 |
5%
|
| 3 | A LOT OF DIFFICULTY | 8 |
0.4%
|
| 4 | CANNOT BE UNDERSTOOD AT ALL | 3 |
0.1%
|
| Sysmiss | 11 |
0.5%
|