Table II.
Correlation matrix for measurements and age. Acronyms are BUA (broadband ultrasonic attenuation), SOS (speed of sound), ABC (average backscatter coefficient), and BMD (bone mineral density).
| Parameter | BUA | SOS | “Stiffness” | ABC | BMD | AGE | HGT | WGT |
|---|---|---|---|---|---|---|---|---|
| BUA | 1.00 | 0.81 | 0.95 | 0.43 | 0.56 | −0.44 | 0.17 | 0.19 |
| SOS | 0.81 | 1.00 | 0.96 | 0.46 | 0.51 | −0.46 | −0.06 | −0.04 |
| “Stiffness” | 0.95 | 0.96 | 1.00 | 0.47 | 0.56 | −0.47 | 0.05 | 0.08 |
| ABC | 0.43 | 0.46 | 0.47 | 1.00 | 0.50 | −0.42 | 0.17 | 0.08 |
| BMD | 0.56 | 0.51 | 0.56 | 0.50 | 1.00 | −0.31 | 0.06 | 0.30 |
| Age | −0.44 | −0.46 | −0.47 | −0.42 | −0.31 | 1.00 | −0.29 | 0.03 |
| Height | 0.17 | −0.06 | 0.05 | 0.17 | 0.06 | −0.29 | 1.00 | 0.35 |
| Weight | 0.19 | −0.04 | 0.08 | 0.08 | 0.30 | 0.03 | 0.35 | 1.00 |