Effect of different surgical approaches on the prognosis of patients with postoperative radiotherapy for stage IIB–IVA esophageal squamous cancer

Table 3 Multivariate COX proportional hazards regression model analysis of factors influencing the poor prognosis of patients with esophageal squamous cell carcinoma

Variable	β	SE	Wald	P	HR	95%CI
N stage	0.082	0.227	0.131	0.717	1.085	0.696~1.692
Clinical stage	0.678	0.207	10.672	0.001	1.970	1.311~2.958
Surgical approach	0.423	0.210	4.065	0.044	1.527	1.012~2.303

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