Value | Category | Cases | |
---|---|---|---|
1 | No, no difficulty | 38468 |
98%
|
2 | Yes, some | 650 |
1.7%
|
3 | Yes, a lot | 100 |
0.3%
|
4 | Cannot see at all | 45 |
0.1%
|
Sysmiss | 6055 |