Table 2.

Multivariate analysis of prognostic factors for survival in PB-DLBCL patients

Covariate	OS
	HR	95%CI	P-valuea
Age, y	1.022	0.391-2.672	0.965
Laterality	0.830	0.392-1.759	0.627
B symptoms	0.532	0.064-4.388	0.558
ECOG PS	0.838	0.435-1.617	0.599
Stage	2.254	0.797-6.376	0.126
LDH	0.649	0.156-2.709	0.553
Adjusted IPI	1.214	0.454-3.242	0.699
Ki67	2.021	0.554-7.376	0.287
P53	3.599	1.465-8.839	0.005
Myc	2.742	0.648-11.611	0.171
DPL	0.606	0.228-1.611	0.315
Three clusters	0.413	0.206-0.830	0.013

^aCox analysis