| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 2429 |
54.7%
|
| 2 | SOME DIFFICULTY | 37 |
0.8%
|
| 3 | A LOT OF DIFFICULTY | 8 |
0.2%
|
| 9 | NO RESPONSE | 2 |
0%
|
| Sysmiss | 1962 |
44.2%
|