Predictors of Serum 25-Hydroxyvitamin D Concentrations among a Sample of Egyptian Schoolchildren

Table 2

Correlation between serum vitamin D (25(OH)D) concentration and different predictive variables.

Variable		Concentration of 25 (OH)D (ng/mL)
Age (years)		0.074
		0.299
BMI		−0.636
		<0.001
Hours of sun exposure/week		0.665
		<0.001
Serum calcium (mg/dL)		−0.278
		<0.001
Serum phosphorus (mg/dL)		−0.156
		0.028
PTH (pg/mL)		−0.577
		<0.001

⁢ is significant.
BMI: body mass index.
PTH: parathyroid hormone.