| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 815 |
59.1%
|
| 2 | SOME DIFFICULTY | 45 |
3.3%
|
| 3 | A LOT OF DIFFICULTY | 1 |
0.1%
|
| Sysmiss | 517 |
37.5%
|