| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 835 |
82.7%
|
| 2 | SOME DIFFICULTY | 116 |
11.5%
|
| 3 | A LOT OF DIFFICULTY | 25 |
2.5%
|
| 4 | CANNOT REMEMBER THINGS AT ALL | 5 |
0.5%
|
| Sysmiss | 29 |
2.9%
|