Value | Category | Cases | |
---|---|---|---|
1 | NO DIFFICULTY | 4999 |
91.2%
|
2 | SOME DIFFICULTY | 314 |
5.7%
|
3 | A LOT OF DIFFICULTY | 39 |
0.7%
|
4 | CANNOT SEE AT ALL | 7 |
0.1%
|
Sysmiss | 120 |
2.2%
|