| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1365 |
92.3%
|
| 2 | SOME DIFFICULTY | 57 |
3.9%
|
| 3 | A LOT OF DIFFICULTY | 5 |
0.3%
|
| 4 | CANNOT REMEMBER THINGS AT ALL | 4 |
0.3%
|
| Sysmiss | 48 |
3.2%
|