Basic characteristics of the individual SNP and the association with serum 25(OH)D concentrations in children, adults and all combined.

<p>Bold numbers represent significant P values.</p><p><i>SNP</i> single nucleotide polymorphism (ordered by position), <i>MAF</i> minor allele frequency for the adult population in procent, <i>HWE</i> P-values for Hardy-Weinberg equilibrium in the adult population, <i>M/m</i> major and minor alleles, <i>Gt</i> genotype, <i>Mean</i>, raw serum 25(OH)D concentrations were log-transformed to approximate a normal distribution an given as geometric mean (nmol/L), <i>95% CI</i> 95%-confident interval.</p>1<p>Unadjusted P values.</p>2<p>Adjusted P values. Linear mixed models with family as a random factor, adjusted for age, sex, BMI, ski and sun holidays, use of solarium, dietary vitamin D intake, use of multivitamin and vitamin D supplementation.