Survival Benefit of Adjuvant Radiation Therapy for Gastric Cancer following Gastrectomy and Extended Lymphadenectomy

Table 2

Overall survival by stage.

Stage	No XRT		XRT		𝑃 value
	𝑁	Median survival (mo)	𝑁	Median survival (mo)
All	11852	25	3208	28	<0.001
IA	2207	114	31	86	0.969
IB	2717	54	503	65	0.002
II	3146	21	1183	34	<0.001
IIIA	2041	14	817	23	<0.001
IIIB	395	11	212	19	<0.001
IV (M0)	1346	9	462	17	<0.001