Determinants of Vitamin D Levels in Italian Children and Adolescents: A Longitudinal Evaluation of Cholecalciferol Supplementation versus the Improvement of Factors Influencing 25(OH)D Status

Figure 4

Seasonal variation in 25(OH)D levels (ng/mL) in Italian children and adolescents with 25(OH)D deficiency after cholecalciferol supplementation (Arm A) or implementation of the factors influencing 25(OH)D status (Arm B) at (versus spring value and versus evaluation). ; ; versus spring value. ; ; versus evaluation. ; ; (Arm A versus Arm B values).