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Background: Blood pressure variability (BPV) is independently associated with the occurrence of hypertensive target organ damage and cardiovascular events and the poor prognosis of cardiovascular diseases.Brachial-ankle pulse wave velocity (baPWV) is an index of arterial stiffness and a marker of atherosclerosis.It has been shown to be an independent predictor of all-cause and cardiovascular mortality as well as an indicator for cardiovascular diseases.However, few studies have investigated the impact of BPV on baPWV.