Table 1.
Selected characteristics of the study sample1.
Figure 1.
Relation between age in years and serum 25-hydroxyvitamin D (nmol/L) concentrations stratified by gender.
Table 2.
Serum 25-hydroxyvitamin D, 1,25-dihyroxyvitamin D and parathyroid hormone concentrations in school-aged children by sex and age group1.
Table 3.
Linear regression model of factors associated with serum 25-hydroxyvitamin D (nmol/L), 1,25-dihydroxyvitamin D (pmol/L) and parathyroid hormone concentrations (ng/L) among Thai schoolchildren aged 6–13 y1.