Value | Category | Cases | |
---|---|---|---|
1 | NO DIFFICULTY | 19368 |
95%
|
2 | SOME DIFFICULTY | 837 |
4.1%
|
3 | A LOT OF DIFFICULTY | 150 |
0.7%
|
4 | CANNOT SEE AT ALL | 21 |
0.1%
|
9 | NO RESPONSE | 1 |
0%
|
Sysmiss | 13021 |