Table 4. Multivariate cox proportional hazards regression analysis of radiotherapy based on different stages of EAC.

Stage	OS
	HR(95% CI)	P-value‡
T2
RT+Surg Vs Surg	1.085(0.745-1.581)	0.671
Surg+RT Vs Surg	0.776(0.400-1.507)	0.454
T3
RT+Surg Vs Surg	0.615(0.475-0.797)	0.000***
Surg+RT Vs Surg	0.597(0.387-0.921)	0.020*

Abbreviations: RT+Surg = neoadjuvant radiotherapy+surgery; Surg+RT = surgery + adjuvant radiotherapy; HR = hazard ratio; CI = confidence interval.

^‡Cox regression model test.