| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3807 |
97.9%
|
| 2 | SOME DIFFICULTY | 71 |
1.8%
|
| 3 | A LOT OF DIFFICULTY | 7 |
0.2%
|
| 4 | CANNOT BE UNDERSTOOD AT ALL | 5 |
0.1%
|
| 9 | NO RESPONSE | 0 |
0%
|
| Sysmiss | 7 |