| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 7709 |
72%
|
| 2 | SOME DIFFICULTY | 1048 |
9.8%
|
| 3 | A LOT OF DIFFICULTY | 130 |
1.2%
|
| 4 | CANNOT REMEMBER/CONCENTRATE AT ALL | 3 |
0%
|
| 9 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 1812 |
16.9%
|