Table 2

The sensitivity, the specificity, and the accuracy outcomes in classifying the grading the disease according to the Amsler-Krumeich classification

Category	Positive	Negative	False-negative	False-positive	Sensitivity	Specificity	Accuracy
Normal	239	299	0	5	1.000	0.984	0.991
G1	96	425	12	10	0.889	0.977	0.959
G2	51	445	24	23	0.680	0.951	0.913
G3	30	477	12	24	0.714	0.952	0.934
G4	59	458	20	6	0.747	0.987	0.952
Total							0.874

Note: G denotes grade.