Value | Category | Cases | |
---|---|---|---|
1 | No difficulty | 4973 |
79.4%
|
2 | Some difficulty | 1137 |
18.2%
|
3 | A lot of difficulty | 139 |
2.2%
|
4 | Cannot see at all | 1 |
0%
|
9 | No response | 12 |
0.2%
|
Sysmiss | 2271 |