Table 2.

Results of univariate analysis of the quantitative X-ray outputs as predictors of dual-energy X-ray absorptiometry normal/non-normal outcome

	Mean normal (SD)	Mean non-normal (SD)	P value	AUC (CI)
Bone thickness	1.75 (0.403)	2.25 (0.503)	<0.001	0.810 (0.741 to 0.878)
Intensity	111.9 (28.3)	87.7 (26.5)	<0.001	0.753 (0.673 to 0.833)
Thickness	18.3 (2.15)	19.8 (2.40)	<0.001	0.674 (0.587 to 0.761)
Alloy	0.0969 (0.0231)	0.115 (0.0275)	<0.001	0.689 (0.602 to 0.775)
Gender	78.6% female	77.6% female	1	0.505 (0.437 to 0.573)
aBMD	0.770 (0.0738)	1.00 (0.120)	<0.001	1 (1 to 1)

aBMD, areal bone mineral density; AUC, area under the ROC curve.