Epidemiology Equations (IMAGE) Brown University Caption A new statistical model brings critical elements -- single-nucleotide differences in DNA and data on gene expression and methylation -- into the study of associations between genetics and disease. Credit Brown University Usage Restrictions with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.