Table 2.

Univariate and multivariate analysis of survival with PG-DLBCL.

Variables	Overall survival				Cancer-specific survival
	Univariate analysis		Multivariate analysis		Univariate analysis		Multivariate analysis
	Log rank X2	P	HR (95% CI)	P	Log rank X2	P	HR (95% CI)	P
Sex	0.333	0.564			0.012	0.911
Female
Male
Age (years)	223.417	0.001		0.001	117.129	0.001		0.001
<50			Reference				Reference
50–59			1.076 (0.720–1.607)	0.722			1.027 (0.658–1.603)	0.906
60–69			1.848 (1.284–2.659)	0.001			1.856 (1.245–2.766)	0.002
70–79			2.834 (1.983–4.052)	0.001			2.143 (1.433–3.206)	0.001
≥80			4.223 (2.966–6.013)	0.001			3.225 (2.176–4.779)	0.001
Race	8.717	0.013		0.001	8.260	0.016		0.003
Black			Reference				Reference
White			0.633 (0.482–0.830)	0.001			0.612 (0.450–0.831)	0.002
Others			0.501 (0.349–0.718)	0.001			0.523 (0.349–0.786)	0.002
Marital status	54.196	0.001			36.632	0.001
Married			Reference				Reference
Unmarried/single			1.492 (1.257–1.771)	0.001			1.472 (1.206–1.796)	0.001
Insurance	16.042	0.001		0.006	13.208	0.001		0.017
Insured			Reference				Reference
Any medicaid			1.362 (1.100–1.686)	0.005			1.345 (1.054–1.716)	0.017
Uninsured			0.724 (0.423–1.240)	0.724			0.681 (0.374–1.241)	0.210
Ann Arbor stage	31.392	0.001		0.001	51.234	0.001		0.001
I			Reference				Reference
II			1.452 (1.156–1.823)	0.001			1.526 (1.161–2.006)	0.002
III			1.828 (1.354–2.469)	0.001			1.996 (1.400–2.845)	0.001
IV			2.159 (1.758–2.650)	0.001			2.760 (2.176–3.501)	0.001
Surgery	1.967	0.161			0.665	0.415
No			Reference				Reference
Yes			1.013 (0.774–1.325)	0.925			0.731 (0.531–1.006)	0.054
Chemotherapy	278.954	0.001			203.315	0.001
No/unknown			Reference				Reference
Yes			0.315 (0.260–0.380)	0.001			0.296 (0.239–0.367)	0.001
Radiation	23.686	0.001			19.663	0.001
No/unknown			Reference				Reference
Yes			0.665 (0.511–0.865)	0.002			0.656 (0.479–0.900)	0.009

Note. Univariate analysis: Kaplan–Meier analysis; multivariate analysis: cox regression analysis; HR: hazard ratio.