| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 7635 |
65.1%
|
| 2 | SOME DIFFICULTY | 1919 |
16.4%
|
| 3 | A LOT OF DIFFICULTY | 305 |
2.6%
|
| 4 | CANNOT REMEMBER/CONCENTRATE AT ALL | 17 |
0.1%
|
| 9 | NO RESPONSE | 3 |
0%
|
| Sysmiss | 1858 |
15.8%
|