Asian teen pth. None of these models suggested a significant relationship between the biochemical values and bone mineralization. Residuals from these nonlinear models were used to examine the ability of measures other than calcium intake to explain additional variability in calcium retention. Br J Nutr ; Osteoporos Int Across Thailand adults aged years were selected from the Thai 4th National Health Examination Survey cohort. Fecal collection compliance measured by PEG recovery averaged Comparison of self-reported, measured, metabolizable energy intake with total energy expenditure in overweight teens. Osteoporos Int Dietary, lifestyle, and demographic aspects also play a role; specifically, more obese individuals tend to have lower vitamin D levels. Support Center Support Center. Low levels of hydroxy vitamin D are associated with elevated parathyroid hormone in healthy adolescent females. Materials and Methods The participants were healthy 7- to y-old children and adolescents. Northern Chinese children, aged 9—16 yr, had an inverse relationship between calcium absorption and OHD 20similar to our findings.