Table 4.

Spearman’s Rho correlations and multivariable regression coefficients between biochemical measures and BMD at baseline

Baseline Variable	QCT BMD Total Hip, mg/cm3		QCT BMD Trabecular Spine, mg/cm3		QCT BMD Cortical Spine, mg/cm3		DXA Total Hip, g/cm2		DXA Spine, g/cm2
	Rhoa	Coefficientb	Rhoa	Coefficientb	Rhoa	Coefficientb	Rhoa	Coefficientb	Rhoa	Coefficientb
Intact PTH	−0.20	—	−0.15	—	−0.39c	−0.35c	−0.28d	−0.42e	−0.32c	−0.38d
BSAP	−0.19	—	0.09	—	−0.34c	−0.29d	−0.26d	−0.28d	−0.23	—
TRAP-5b	−0.15	—	0.06	—	−0.33c	−0.33d	−0.18	—	−0.14	—
FGF23	−0.19	—	−0.22	—	−0.25d	−0.27d	−0.22	—	−0.27d	−0.25d
Sclerostin	0.35c	0.45e	0.18	—	0.23	—	0.39e	0.40e	0.32c	0.36c

Regression coefficients are standardized and adjusted for age group, sex, race, and BMI (n=65–78). Significance for multiple correlations was set at P<0.01 and P<0.05 for multivariable regressions.

^aBivariate correlation Rho.

^bMultivariable regression coefficient.

^cP<0.01.

^dP<0.05.

^eP<0.001.