| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 4999 |
93.3%
|
| 2 | SOME DIFFICULTY | 314 |
5.9%
|
| 3 | A LOT OF DIFFICULTY | 39 |
0.7%
|
| 4 | CANNOT REMEMBER THINGS AT ALL | 7 |
0.1%
|
| 9 | NO RESPONSE | 0 |
0%
|
| Sysmiss | 1 |