. Author manuscript; available in PMC: 2014 Oct 1.

Published in final edited form as: J Clin Densitom. 2013 Sep 27;16(4):10.1016/j.jocd.2013.07.001. doi: 10.1016/j.jocd.2013.07.001

Table 3.

Univariate or multiple linear regression analysis to predict the variability in QCT indices (n=115)

QCT parameters	LS aBMD (R²)	TBS (R²)	TBS + LS aBMD (R²)	P-value Combination vs. aBMD alone
Lumbar Spine (L1, L2)
Vertebral Body CSA	0.087^**	0.016	0.088^**	0.50
Average trabecular vBMD mid vertebra	0.474^***	0.441^***	0.605^***	0.005

Femoral Neck
Minimal CSA	0.126^***	0.000	0.165^***	0.98
Integral vBMD	0.258^***	0.424^***	0.467^***	0.0003
Trabecular vBMD	0.401^***	0.411^***	0.540^***	0.01
Cortical vBMD	0.007	0.120^***	0.131^***	0.24
C/I	0.210^***	0.292^***	0.338^***	0.006

Total Hip
Integral vBMD	0.352^***	0.414^***	0.510^***	0.005
Trabecular vBMD	0.326^***	0.330^***	0.436^***	0.09
Cortical vBMD	0.129^***	0.241^***	0.258^***	0.13
C/I	0.126^***	0.292^***	0.301^***	0.04

LS aBMD: lumbar spine areal bone mineral density; TBS: trabecular bone score;

CSA: cross-sectional area; vBMD: volumetric bone mineral density; C/I: an estimate of cortical thickness

p<.05;

^**

p<.01;

^***

p<.001