Table 3.
Observed Agreement of Replicate Gradings of Same Photographs
|
AMD Level (Second Grading) |
AMD Level (First Grading) |
|||||||||
|
No AMD (Level 1)
N
= 101,159 |
Minimal Early AMD (Level 2)
N
= 11,614 |
Moderate Early AMD (Level 3)
N
= 11,333 |
Severe Early AMD (Level 4)
N
= 14,591 |
Late AMD (Level 5)
N
= 31,847 |
||||||
|
No.* |
% |
No.* |
% |
No.* |
% |
No.* |
% |
No.* |
% |
|
| 1 | 97,158 | 96 | 1,808 | 16 | 1,379 | 12 | 768 | <1 | 46 | <1 |
| 2 | 1,808 | 2 | 7,202 | 62 | 2,505 | 22 | 99 | <1 | 0 | 0 |
| 3 | 1,379 | 1 | 2,505 | 22 | 4,434 | 39 | 2,032 | 18 | 983 | 3 |
| 4 | 768 | <1 | 99 | <1 | 2,032 | 18 | 8,590 | 59 | 3,102 | 10 |
| 5 | 46 | <1 | 0 | 0 | 983 | 9 | 3,102 | 10 | 27,716 | 87 |
* No., N, number of paired gradings.