| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 4132 |
75.5%
|
| 2 | SOME DIFFICULTY | 163 |
3%
|
| 3 | A LOT OF DIFFICULTY | 14 |
0.3%
|
| Sysmiss | 1167 |
21.3%
|