Elderly Patients with Nondistant Metastatic Pancreatic Head Adenocarcinoma Cannot Benefit from More Radical Surgery

Table 3

Univariate and multivariate analysis of CSS Cox model before PSM.

Term	Univariate Cox analysis			Multivariate Cox analysis
	HR	(95% CI)	-value	HR	(95% CI)	-value
Marital status	0.806	0.748–0.868	<0.001	0.943	0.871–1.022	0.152
Age (years)	1.456	1.385–1.530	<0.001	1.148	1.087–1.211	<0.001
Race	1.029	0.986–1.073	0.189	1.014	0.971–1.059	0.529
Sex	1.055	0.980–1.135	0.154	0.992	0.918–1.072	0.841
Diagnosis year	0.996	0.963–1.031	0.830	0.979	0.945–1.014	0.236
Grade	1.223	1.190–1.258	<0.001	1.026	0.993–1.059	0.121
T stage	1.186	1.142–1.232	<0.001	1.046	0.994–1.100	0.082
Tumor size	1.264	1.200–1.332	<0.001	1.216	1.138–1.299	<0.001
N stage	0.731	0.686–0.779	<0.001	1.281	1.180–1.390	<0.001
Surgery	0.351	0.321–0.382	<0.001	0.338	0.296–0.386	<0.001
Radiation	0.700	0.648–0.755	<0.001	0.863	0.794–0.939	0.001
Chemotherapy	0.495	0.459–0.534	<0.001	0.555	0.508–0.607	<0.001

Abbreviations: HR, hazard ratio; CI, confidence interval.