Development and validation of an electronic frailty index using routine primary care electronic health record data

frailty is an especially problematic expression of population ageing. International guidelines recommend routine identification of frailty to provide evidence-based treatment, but currently available tools require additional resource.

to develop and validate an electronic frailty index (eFI) using routinely available primary care electronic health record data. STUDY DESIGN AND SETTING: retrospective cohort study. Development and internal validation cohorts were established using a randomly split sample of the ResearchOne primary care database. External validation cohort established using THIN database.