Figure 1

Diagram showing the study design. Left side of the diagram depicts the interaction between 8 environmental factors and 5,908,111 single nucleotide polymorphisms (SNPs), and the right side of the diagram depicts the interaction between 7 environmental factors (without physical activity) and 5,908,111 SNPs. The numbers in the parenthesis indicate the SNPs excluded by the specified quality control. BMI body mass index.