Comparing mass screening techniques for gastric cancer in Japan

Table 1 Transition before and after adoption of endoscopic screening program

		2002	2003	2004
Participants (n)	ISE	-	8118	11 679
	ISX	28 332	20 058	19 011
	MSP	6757	6381	5910
Detection rate (%)	ISE	-	0.81	0.87
	ISX	0.33	0.31	0.32
	MSP	0.25	0.22	0.19
Rate of early gastric cancer (%)	ISE	-	74.2	75.5
	ISX	40.8	56.5	63.9
	MSP	46.7	71.4	54.5
Cost ( J YEN )	ISE	-	1 693 000	1 608 000
	ISE2		2 113 000	1 998 000
	ISX	5 113 000	4 365 000	4 177 000
	MSP	2 712 000	2 792 000	3 290 000

ISE: Individual screening program with endoscopy; ISE²: Cost analysis with ordinary endoscopic examination fee; ISX: Individual screening program with X-ray; MSP: Mass screening program with photofluorography; Cost: Total cost of finding one gastric cancer patient.