| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 4022 |
61.2%
|
| 2 | SOME DIFFICULTY | 1210 |
18.4%
|
| 3 | A LOT OF DIFFICULTY | 54 |
0.8%
|
| 4 | CANNOT REMEMBER/CONCENTRATE AT ALL | 2 |
0%
|
| 9 | NO RESPONSE | 2 |
0%
|
| Sysmiss | 1286 |
19.6%
|