| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 6832 |
76.2%
|
| 2 | SOME DIFFICULTY | 1772 |
19.8%
|
| 3 | A LOT OF DIFFICULTY | 326 |
3.6%
|
| 4 | CANNOT REMEMEBR THINGS AT ALL | 15 |
0.2%
|
| 9 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 19 |
0.2%
|