| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 2145 |
94.4%
|
| 2 | SOME DIFFICULTY | 97 |
4.3%
|
| 3 | A LOT OF DIFFICULTY | 19 |
0.8%
|
| Sysmiss | 11 |
0.5%
|