Figure 2

Seasonality of 1,25-(OH) 2 vitamin D levels. Patterns of 1,25-(OH)2 vitamin D levels overtime related to seasonality: a) Sunny months (between May and October)\b) Not sunny months (between November and April). No significant differences between the two groups were found in Δ[48-bl] 1,25-(OH)2 vitamin D (p = 0.2364), but different patterns of vitamin D related to seasonality were found (p < 0.0001).