Table 5.

Univariate and multivariate linear regression model.

Univariate
	β Coefficient	95% CI	p Value
β-2 microglobulin	0.75	99.9–192.7	<0.005
Gender (male)	−0.19	−723.5/220.1	0.28
Age	−0.05	−36/26.1	0.75
MM type (light chain)	0.61	653.5/1827.3	<0.005
M-protein at diagnosis	−0.33	−238.3/2	0.54
Light-chain type (lambda)	0.17	−248.4/695.4	0.34
LDH	0.07	−1.2/1.8	0.66
Albumin	0.004	−394.5/404.2	0.98
% BM plasma cells	−0.09	−30.9/18.8	0.62
Extramedullary disease (yes)	−0.05	−671.4/497.9	0.76
Multivariate
	β coefficient	95% CI	p value
MM type (light chain)	0.28	−2.5/1128.1	0.05
M-protein at diagnosis	−0.11	−131.3/50.6	0.37
β-2 microglobulin	0.6	67.7/166.3	<0.005

Abbreviations. FLC, free light chain; MM, multiple myeloma; LDH, lactate dehydrogenase; BM, bone marrow.