Table 2.

Correlation between QUS indices and OSTA scores

	Men (n=283)		n	Women (n= 362)		n	Total (n=645)		n
	rs	p-value		rs	p-value		rs	p-value
SOS
Chinese	0.196	0.020	140	0.221	0.001	208	0.226	<0.001	348
Malay	−0.022	0.816	110	0.215	0.016	124	0.133	0.042	234
Indian	−0.266	0.134	33	0.303	0.104	30	0.049	0.705	63
Overall	0.062	0.295	283	0.217	<0.001	362	0.176	<0.001	645
BUA
Chinese	0.282	0.001	140	0.371	<0.001	208	0.391	<0.001	348
Malay	0.144	0.134	110	0.403	<0.001	124	0.317	<0.001	234
Indian	−0.071	0.694	33	0.357	0.053	30	0.214	0.092	63
Overall	0.192	0.001	283	0.392	<0.001	362	0.359	<0.001	645
SI
Chinese	0.285	0.001	140	0.325	<0.001	208	0.340	<0.001	348
Malay	0.064	0.508	110	0.348	<0.001	124	0.248	<0.001	234
Indian	−0.230	0.197	33	0.345	0.062	30	0.137	0.283	63
Overall	0.140	0.019	283	0.328	<0.001	362	0.289	<0.001	645
T-score
Chinese	0.202	0.017	140	0.113	0.105	208	0.111	0.038	348
Malay	0.006	0.951	110	0.172	0.056	124	0.089	0.177	234
Indian	−0.238	0.182	33	0.072	0.706	30	−0.056	0.661	63
Overall	0.146	0.014	283	0.321	<0.001	362	0.194	<0.001	645

Notes: The table indicates Spearmen’s correlation coefficient (r_s) values and the corresponding p-values between QUS indices (SOS, BUA, SI, and T-score) and OSTA based on sex and ethnic group. Bolded p-values are statistically significant (p<0.05).

Abbreviations: BUA, broadband ultrasound attenuation; OSTA, osteoporosis self-assessment tool for Asians; QUS, quantitative ultrasound; SI, stiffness index; SOS, speed of sound.