Red blood cell distribution width and platelet counts are independent prognostic factors and improve the predictive ability of IPI score in diffuse large B-cell lymphoma patients

Table 4 Multivariate analysis for OS and PFS of patients treated with or without rituximab

Parameter	Overall survival		P value	Progression-free survival		P value
Parameter	HR	95%CI	P value	HR	95%CI	P value
CHOP cohort(n = 175)
RDW > 14.35%	2.123	1.183–3.812	0.012			0.502
age > 60	3.449	1.777–6.692	0.000	3.434	2.093–5.634	0.000
Ann Arbor stage III/IV	3.155	1.702–5.847	0.000	2.814	1.785–4.436	0.000
R-CHOP cohort(n = 174)
PLT≦126.5(×10⁹/L)	3.344	1.491–7.504	0.003	3.076	1.653–5.723	0.000
age > 60	2.344	1.090–5.039	0.029			0.333
IPI > 2	2.304	1.061–5.002	0.035			0.322
Extranodal sites> 1			0.772	2.347	1.371–4.020	0.002

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