Table 3. Distribution of cases in the test sets obtained from hospitals (A-E).

Organ	Specimen type	Class	Diagnosis	Hosp-A	Hosp-B	Hosp-C	Hosp-D	Hosp-E	total
Stomach	Endoscopic biopsy	Adenocarcinoma	Adenocarcinoma	108	120	57	0	52	337
		Non-adenocarcinoma	Adenoma	33	35	27	0	32	127
			Non-neoplastic	263	86	78	0	109	536
			total	404	241	162	0	193	1000
Colon	Endoscopic biopsy	Adenocarcinoma	Adenocarcinoma	125	158	0	74	42	399
		Non-adenocarcinoma	Adenoma	61	55	0	83	78	277
			Non-neoplastic	136	109	0	62	17	324
			total	322	322	0	219	137	1000
Lung	TBLB	Adenocarcinoma	Adenocarcinoma	211	156	0	103	0	470
		Non-adenocarcinoma	Non-neoplastic	259	198	0	73	0	530
			total	470	354	0	176	0	1000
Breast	Needle biopsy	Adenocarcinoma	Invasive ductal carcinoma	289	44	59	0	0	392
		Non-adenocarcinoma	Non-neoplastic	233	166	177	0	0	576
			total	522	210	236	0	0	968
Lymph node	Radical dissection	Adenocarcinoma	Adenocarcinoma	57	79	10	0	0	146
		Non-adenocarcinoma	Non-neoplastic	222	314	246	0	0	782
			total	279	393	256	0	0	928
			total	1997	1520	654	395	330	4896