Table 2. Contingency table of diagnostic standard result versus functional test result.

Parameters	Disc photograph grader		MRA classifier		Combination of disc photograph grader and MRA classifier
	+	-	+	-	+	-
icVEP
+	50	35	38	47	26	23
-	80	123	36	167	23	110
SAP
+	42	28	36	34	29	21
-	88	130	38	180	20	112

+: Abnormality; -: Normality. The value of each intersection represents a summary of results that satisfy both the row and the column condition.