| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 22759 |
85.1%
|
| 2 | SOME DIFFICULTY | 3589 |
13.4%
|
| 3 | A LOT OF DIFFICULTY | 385 |
1.4%
|
| 4 | CANNOT REMEMBER/ CONCENTRATE AT ALL | 16 |
0.1%
|
| 9 | NO RESPONSE | 3 |
0%
|
| Sysmiss | 4308 |