Table 3.

Multivariate analysis of the risk factors associated with 5-y OS

Characteristics	Training cohort			Validation cohort
	Relative risk	95% CI	P	Relative risk	95% CI	P
ECOG performance status 2	1.48	0.67-18.2	.14	1.44	0.72-2.89	.30
LDH > normal	2.10	0.67-6.59	.20	1.71	0.79-3.68	.17
MHhigh	4.75	1.25-18.1	.02	4.92	1.09-17.03	.04