A retrospective cohort study used linked electronic health records from the Welsh Secure Anonymised Information Linkage (SAIL) databank. All patients had hypertension in the absence of established cardiovascular disease, and were over the age of 65 years in 2007. Systolic blood pressure and frailty, measured using the electronic frailty index were recorded. Patients were followed up for ten years. Time to event analysis measured first ever major adverse cardiovascular or cerebrovascular event (MACCE), all-cause mortality and injurious falls. Adjustment was made for established cardiovascular risk factors.
