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.