| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3886 |
59.9%
|
| 2 | SOME DIFFICULTY | 751 |
11.6%
|
| 3 | A LOT OF DIFFICULTY | 106 |
1.6%
|
| 9 | NO RESPONSE | 7 |
0.1%
|
| Sysmiss | 1733 |
26.7%
|