Table 2.

Results of ROC analysis

	AUC (95%CI)	P value	Cut off (HU)	Sensitivity (%)	Specificity (%)
Upper vertebrae of operated segment HU value:	0.724(0.521–0.928)	0.042	98.7	0.769	0.667
Lower vertebrae of operated segment HU value:	0.702(0.483–0.921)	0.032	96.6	0.923	0.583
Mean global HU value:	0.744(0.544–0.943)	0.004	104.2	0.846	0.664
Operated segment HU value:	0.718(0.504–0.932)	0.027	97.2	0.925	0.580
Forearm T-score:	0.840(0.672–1.000)	0.004	−2.6	0.846	0.883