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Researchers wanted to know if the enormous amount of data available in electronic health records (EHRs) could be used to build a tool that predicts the presence of coronary artery disease (CAD) a year before it is clinically apparent — and if it could do so better than can current guidelines based on the pooled cohort equations (PCE) tool or a polygenic risk score for CAD.
To find out, the investigators applied a machine-learning framework to EHR data — comprising 107 laboratory variables and 9 clinical variables, measured as part of routine clinical care — from a multiethnic clinical cohort of 555 CAD cases and 6349 controls. For external validation, the same framework was applied to 3130 CAD cases and 378,344 controls from the UK Biobank, …