Table 2 Results of ROC analysis

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