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Blood pressure readings taken in a physician's office can vary due to timing, equipment, and biological factors. Studies have linked variability between visits to an increased risk of cardiovascular disease and death, but little was known about its real-world implications. A retrospective cohort study of over 500,000 adults with more than 7.7 million blood pressure measurements found that visit-to-visit variability in blood pressure was associated with an increased risk of cardiovascular events and all-cause mortality. The study's findings suggest that blood pressure management...