| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 14314 |
91.8%
|
| 2 | SOME DIFFICULTY | 1108 |
7.1%
|
| 3 | A LOT OF DIFFICULTY | 120 |
0.8%
|
| 4 | CANNOT REMEMBER THINGS AT ALL | 48 |
0.3%
|
| 9 | NO RESPONSE | 5 |
0%
|
| Sysmiss | 18 |