Table 4. Multivariate COX regression analysis for overall survival in DLBCL patients including prognostic clinical variables, and CXCR4+CXCR7- expression versus other combinations.

	Multivariate COX Regression
	HR (IC 95%)	P
CXCR4+CXCR7- vs other combinations	5.685 (2.099–15.398)	0.001*
ECOG (0–2 vs >2)	2.157 (0.742–6.2701)	0.158
IPI (0–2 vs 3–5)	3.102 (1.101–8.741)	0.032*

All the variables included in this analysis were significant factors in the univariate analysis. HR, hazard ratio; 95% IC, 95% confidence interval of hazard ratio; ECOG, Eastern Cooperative Group; IPI, International Prognostic Index.

*P ≤ 0.05