Table 5.

Subgroup analysis of patients with AEG stratified by the seventh AJCC TNM classification for cancers of the esophagus

AJCC esophagus	Subsets	n	5-year survival	P value between subsets	P value between stages
IA	pT1aN0M0G1-2	6	100%	0.386
	pT1bN0M0G1-2	8	75%
					0.528
IB	pT2N0M0G1-2	19	78.3%	/
					0.442
IIA	pT2N0M0G3	5	50%	/
					0.45
IIB	pT3N0M0	48	49.2%	0.788
	pT2N1M0	6	60%		0.119
IIIA	pT2N2M0	6	26.7%	0.79
	pT3N1M0	49	44.8%
	pT4aN0M0	1	0
					0.106
IIIB	pT3N2M0	70	27.9%	/
					0.002
IIIC	pT3N3M0	55	13.9%	0.666
	pT4aN3M0	1	0
	pT4bN1M0	1	0
	pT4bN2M0	2	0
	pT4bN3M0	4	25%		0.554
IV	anyTanyNM1	10	10%	/