| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 427 |
52.7%
|
| 2 | SOME DIFFICULTY | 22 |
2.7%
|
| 3 | A LOT OF DIFFICULTY | 2 |
0.2%
|
| Sysmiss | 360 |
44.4%
|