| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 1111 |
82.2%
|
| 2 | SOME DIFFICULTY | 39 |
2.9%
|
| 3 | A LOT OF DIFFICULTY | 3 |
0.2%
|
| 4 | CANNOT REMEMBER THINGS AT ALL | 4 |
0.3%
|
| Sysmiss | 195 |
14.4%
|