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Table 2 Comparison of 5-year survival rates taking disease stage into consideration

From: Appropriateness of the institute certification system for esophageal surgeries by the Japan Esophageal Society: evaluation of survival outcomes using data from the National Database of Hospital-Based Cancer Registries in Japan

	AIBCES	Non-AIBCES	p
Number of patients	1343	792
Time at risk (days)	1985,832	10,55,612
Death	670 (50%)	455 (57%)
5-year survival rate (%)
All cStages	52.8%	45.70%	<0.01
cStage 0	87.5%	–
cStage I	76.8%	74.3%	0.18
cStage II	55.1%	44.9%	<0.01
cStage III	38.0%	30.3%	<0.01
cStage IV	28.2%	18.3%	0.06

AIBCES Authorized Institute for Board Certified Esophageal Surgeon

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