Evaluation of the Eighth Edition of the American Joint Committee on Cancer TNM Staging System for Gastric Cancer: An Analysis of 7371 Patients in the SEER Database

Table 1

Comparison of the 5-year survival rates based on the 7^th edition of the TNM system and the 8^th edition of the TNM system.

7th edition	8th edition (5-YSR)								value
	IA	IB	IIA	IIB	IIIA	IIIB	IIIC	IV
IA	937								N/A
IB		517							N/A
IIA			915						N/A
IIB				808 (53.8%)		8 (37.5%)			0.221
IIIA					770 (43.0%)	27 (50.8%)			0.458
IIIB					328 (39.5%)	709 (30.3%)	324 (11.9%)		<0.001
IIIC						536 (21.4%)	676 (9.2%)		<0.001
IV								816	N/A
value	N/A	N/A	N/A	N/A	0.091	0.029	0.006	N/A