Table 2.

Results from test of diagnostic classification.

Item		Pre		Post
No	Content	N	% correct	n	% correct
1B	Ulcer	59	49	50	42
2B*	Basal cell carcinoma	59	97	50	96
3B*	Invasive ductal carcinoma of the breast	59	95	49	98
4B*	Intraductal carcinoma of the breast	114	81	105	94
5B	Fibroepithelial polyp	114	77	105	72
6B#	Prostatitis	114	54	105	53
7B#	Crohn’s disease	55	55	55	60
8B	Metastatic adenocarcinoma	55	84	55	89
9B#	Hepatocellular carcinoma	55	47	55	56

(Classification is judged to be “correct” if the case is diagnosed correctly as neoplastic or reactive. The respondents of B1–B3 and B7–B9 consist of non-overlapping samples.)