Value | Category | Cases | |
---|---|---|---|
1 | No, no difficulty at all | 17445 |
88.8%
|
2 | Yes, some difficulty | 1874 |
9.5%
|
3 | Yes, a lot of difficulty | 202 |
1%
|
4 | Cannot see at all | 22 |
0.1%
|
9 | Unspecified | 112 |
0.6%
|