Value | Category | Cases | |
---|---|---|---|
1 | NO DIFFICULTY | 16169 |
95.8%
|
2 | SOME DIFFICULTY | 637 |
3.8%
|
3 | A LOT OF DIFFICULTY | 50 |
0.3%
|
4 | CANNOT SEE AT ALL | 4 |
0%
|
9 | NO RESPONSE | 26 |
0.2%
|
Sysmiss | 14217 |