| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 16088 |
80.1%
|
| 2 | SOME DIFFICULTY | 3137 |
15.6%
|
| 3 | A LOT OF DIFFICULTY | 649 |
3.2%
|
| 4 | CANNOT REMEMBER THINGS AT ALL | 200 |
1%
|
| 9 | NO RESPONSE | 3 |
0%
|
| Sysmiss | 145 |