| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1935 |
54.4%
|
| 2 | SOME DIFFICULTY | 97 |
2.7%
|
| 3 | A LOT OF DIFFICULTY | 12 |
0.3%
|
| 4 | CANNOT UNDERSTAND AT ALL | 4 |
0.1%
|
| 9 | NO RESPONSE | 4 |
0.1%
|
| Sysmiss | 1508 |
42.4%
|