Fig. 7. Relationship between cortical bone mineral densities (cBMDs) and chronological age among normal, PDH, and ADH patients at each vertebra. Predicted linear regression lines were developed and plotted along with scatter from actual data of cBMDs. The cBMDs-to age relationship was significant (R2 = 0.02-0.12, p < 0.01-0.001). The statistically negative correlation between cortical bone mineral density and age was confirmed. Scatterplots also show that cBMDs of PDH patients were not significantly different from cBMDs of normal patients. However cBMDs of ADH patients are definitely different from those of normal patients.
