| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 7611 |
97.3%
|
| 2 | SOME DIFFICULTY | 142 |
1.8%
|
| 3 | A LOT OF DIFFICULTY | 23 |
0.3%
|
| 4 | CANNOT BE UNDERSTOOD AT ALL | 14 |
0.2%
|
| Sysmiss | 34 |
0.4%
|