Table 2. Area under the ROC curves for osteoporosis in any ROI including lumbar spine, femoral neck, and total hip.
| Women (n=131) | Men (n=109) | |||||||||
| 95% CI | 95% CI | |||||||||
| QUS variables | Area | SE | p* | Lower | Upper | Area | SE | p* | Lower | Upper |
| QUI | 0,747 | 0,044 | <0.001 | 0,661 | 0,832 | 0,720 | 0,050 | <0.001 | 0,622 | 0,817 |
| QUI T-score | 0,744 | 0,044 | <0.001 | 0,658 | 0,830 | 0,720 | 0,050 | <0.001 | 0,623 | 0,817 |
| BUA (dB/MHz) | 0,712 | 0,047 | <0.001 | 0,621 | 0,804 | 0,661 | 0,054 | 0,006 | 0,556 | 0,767 |
| SOS (m/s) | 0,764 | 0,043 | <0.001 | 0,680 | 0,848 | 0,735 | 0,048 | <0.001 | 0,641 | 0,830 |
| eBMD (g/cm2) | 0,744 | 0,044 | <0.001 | 0,657 | 0,830 | 0,727 | 0,049 | <0.001 | 0,630 | 0,824 |
| Radial SOS (m/s) | 0,661 | 0,050 | 0,002 | 0,564 | 0,758 | 0,448 | 0,060 | 0,372 | 0,330 | 0,565 |
| Radial SOS T-score | 0,673 | 0,049 | 0,001 | 0,576 | 0,770 | 0,449 | 0,059 | 0,382 | 0,332 | 0,565 |
| Tibial SOS (m/s) | 0,586 | 0,050 | 0,100 | 0,487 | 0,665 | 0,595 | 0,060 | 0,107 | 0,477 | 0,712 |
| Phalangeal SOS (m/s) # | 0,526 | 0,076 | 0,728 | 0,378 | 0,626 | 0,492 | 0,061 | 0,897 | 0,371 | 0,612 |
| ROC: Receiver operating characteristics; ROI: Region of interest; CI: Confidence interval; QUS: Quantitative ultrasound; SE: Standard error; QUI: Quantitative Ultrasound Index; BUA: Broadband ultrasound attenuation; SOS: Speed of sound; eBMD: Estimated heel bone mineral density; * p-value for area under the curve (significance level=0.5); # Measured in broadband ultrasound attenuation. | ||||||||||