| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 633 |
57.8%
|
| 2 | SOME DIFFICULTY | 11 |
1%
|
| 3 | A LOT OF DIFFICULTY | 2 |
0.2%
|
| 9 | NO RESPONSE | 1 |
0.1%
|
| Sysmiss | 449 |
41%
|