| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 391 |
55.6%
|
| 2 | SOME DIFFICULTY | 32 |
4.6%
|
| 3 | A LOT OF DIFFICULTY | 5 |
0.7%
|
| 4 | CANNOT UNDERSTAND AT ALL | 1 |
0.1%
|
| Sysmiss | 274 |
39%
|