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Diagnostic efficiency of ROI 21 CTh and ROI 14 HU value for osteoporosis.
| Parameters | Diagnosis for nonosteoporosis | ||||||
|---|---|---|---|---|---|---|---|
| AUC | 95% CI | Cut-off | Se | Sp | PV+ | PV− | |
| ROI 21 CTh | 0.821 | 0.710–0.932 | 3.185 | 0.84 | 0.71 | 0.7 | 0.846 |
| ROI 14 HU | 0.883 | 0.795–0.970 | 424.97 | 0.76 | 0.871 | 0.826 | 0.818 |
ROI, region of interest; CTh, cortical bone thickness; HU, Hounsfield unit; AUC, area under the curve; Se, sensitivity; Sp, specificity; PV+, positive predictive value; PV−, negative predictive value.
