Table 1. Adjusted correlations coefficients for prediction of maximal force and maximal apparent stress using FE, QCT and aBMD.
|
Adj. R2 |
Maximum force |
Maximum apparent stress |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Site | Imaging | N | FE | BMD*CSA | BMC | aBMD | BMD | FE | |
| Distal radius | HR-pQCT | 21 | 0.920 | 0.893 (P=0.158) | 0.892 (P=0.151) | 0.769* (P=0.003) | 0.707 (P=0.284) | 0.751 (P=0.347) | 0.775 |
| Vertebra | QCT | 37 | 0.768 | 0.707 (P=0.179) | 0.692 (P=0.175) | 0.624* (P=0.046) | 0.467* (P=0.001) | 0.732 (P=0.283) | 0.771 |
| Hip (fall) | QCT | 36 | 0.824 | — | 0.699* (P=0.032) | 0.791 (P=0.264) | — | — | — |
Abbreviations: aBMD, areal bone mineral density; Adj. R2, adjusted coefficient of determination; BMC, bone mineral content; BMD, bone mineral density; FE, finite element; HR-pQCT, high-resolution peripheral computer tomography.
For aBMD, which is neither a structural nor a material variable, the predictions of both maximal force and apparent stress are reported.
*Designates a statistically different correlation coefficient with respect to the corresponding FE variable (P<0.05).