Value | Category | Cases | |
---|---|---|---|
1 | NO DIFFICULTY | 15618 |
89.9%
|
2 | SOME DIFFICULTY | 1073 |
6.2%
|
3 | A LOT OF DIFFICULTY | 650 |
3.7%
|
4 | CANNOT SEE AT ALL | 24 |
0.1%
|
9 | NO RESPONSE | 11 |
0.1%
|
Sysmiss | 168 |