| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 16316 |
93.9%
|
| 2 | SOME DIFFICULTY | 909 |
5.2%
|
| 3 | A LOT OF DIFFICULTY | 115 |
0.7%
|
| 4 | CANNOT BE UNDERSTOOD AT ALL | 28 |
0.2%
|
| 9 | NO RESPONSE | 8 |
0%
|
| Sysmiss | 168 |