The Impact of Surgery on Long-Term Survival of Patients with Primary Gastric Diffuse Large B-Cell Lymphoma: A SEER Population-Based Study

Table 2

Independent risk factors of long-term survival after propensity score matching.

Variable	Univariate analysis; P	Multivariate analysis
		HR	95% CI
Age	<0.001				<0.001
<65		1(Ref)
65-74		1.344	1.108	1.63	0.003
≤75		3.053	2.586	3.603	<0.001
Gender	0.009				0.919
Male		1(Ref)
Female		1.007	0.873	1.162
Race	0.918
White
Other
Tumor location	0.147
Upper third
Mid and low third
Overlapping stomach
Unknown location
Ann Arbor stage	<0.001				<0.001
I		1(Ref)
II		1.515	1.258	1.824	<0.001
III		1.869	1.332	2.624	<0.001
IV		2.413	2.037	2.858	<0.001
Radiation	0.022				0.435
Yes		1(Ref)
No		1.115	0.849	1.464
Chemotherapy	<0.001				<0.001
Yes		1(Ref)
No/unknown		2.109	1.801	2.469
Surgery	0.046				<0.001
Yes		1(Ref)
No		1.361	1.077	1.719