Table 3.

Coefficients and β (Standardized Regression) Coefficients for Variables in Multivariate Model Relating Arterialized Venous Bicarbonate Obtained at Year 3 to Percentage Change in BMD Over the 2.1 ± 0.3 (mean ± SD) Years Between Baseline (Year 1) and Year 3 Among the 2287 Members of the Health, Aging and Body Composition Cohort in Whom Arterialized Venous Blood Gas Measurements Were Obtained at the Year 3 Clinic Visit

	Coefficient	β Coefficient	SE	P Value
Arterialized venous bicarbonate, mmol/L	0.194	0.079	0.053	<.001
Race, Black/White	−0.729	−0.107	0.152	<.001
Gender, male/female	1.046	0.158	0.161	<.001
Clinic site, Memphis/Pittsburgh	0.160	0.024	0.139	.25
Age, y	−0.069	−0.059	0.025	.005
Weight, kg	0.032	0.142	0.005	<.001
Smoking status, yes/no	0.137	0.040	0.076	.07
eGFR (MDRD), mL/min/1.73 m2	0.003	0.013	0.005	.54

Abbreviation: MDRD, Modification of Diet in Renal Disease equation.