| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1709 |
53.5%
|
| 2 | SOME DIFFICULTY | 124 |
3.9%
|
| 3 | A LOT OF DIFFICULTY | 14 |
0.4%
|
| 9 | NO RESPONSE | 3 |
0.1%
|
| Sysmiss | 1347 |
42.1%
|