| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1039 |
71.5%
|
| 2 | SOME DIFFICULTY | 7 |
0.5%
|
| 3 | A LOT OF DIFFICULTY | 2 |
0.1%
|
| Sysmiss | 405 |
27.9%
|