| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1644 |
90.1%
|
| 2 | SOME DIFFICULTY | 72 |
3.9%
|
| 3 | A LOT OF DIFFICULTY | 14 |
0.8%
|
| 4 | CANNOT REMEMBER THINGS AT ALL | 2 |
0.1%
|
| 9 | NO RESPONSE | 2 |
0.1%
|
| Sysmiss | 90 |
4.9%
|