Figure 2.

Relationships of serum 25[OH] vitamin D levels within families by seasons. a. Correlations, slopes and p-values for plots of log serum VitD-25 of Patients vs. Families of patients in Summer (N22) (r2 = 0.2098, r = 0.458, p = 0.032): b winter (N22) (r2 = 0.0672, r = 0.259, p = 0.24), c Controls vs. Families of controls in summer (N18) (r2 = 0.1969, r = 0.444, p = 0.065), d in winter (N25) (r2 = 0.0068, r = 0.082, p = 0.6955).

Grunbaum et al. Nutrition Journal 2013 12:145   doi:10.1186/1475-2891-12-145
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