| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 5994 |
83.8%
|
| 2 | SOME DIFFICULTY | 933 |
13%
|
| 3 | A LOT OF DIFFICULTY | 100 |
1.4%
|
| 4 | CANNOT REMEMBER THINGS AT ALL | 6 |
0.1%
|
| 9 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 121 |
1.7%
|