| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 2908 |
66.2%
|
| 2 | SOME DIFFICULTY | 1332 |
30.3%
|
| 3 | A LOT OF DIFFICULTY | 146 |
3.3%
|
| 4 | CANNOT REMEMBER/CONCENTRATE AT ALL | 6 |
0.1%
|
| 9 | NO RESPONSE | 2 |
0%
|
| Sysmiss | 13609 |