Heteroscedastic regression analysis of factors affecting BMD monitoring.
D015519:Bone Density / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D008991:Monitoring, Physiologic / Q000706:statistics & numerical data*; D012044:Regression Analysis; D015203:Reproducibility of Results; D013997:Time Factors