Intermountain chronic disease risk score (ICHRON) validation for prediction of incident chronic disease diagnoses in an australian primary prevention population

•ICHRON predicted a 3-year chronic disease among an Australian validation cohort.•ICHRON is valuable for primary care patients in distinct locales.•ICHRON was found to be more predictive among Aboriginal and Torres Islanders.•ICHRON can be calculated within the EHR using standardized laboratory parameters.