Ethnic differences in the association of hypertension duration with cardiovascular diseases risk in Chinese adults

To the Editor:The relationship between hypertension duration and the risk of cardiovascular diseases(CVDs)has received considerable attention in recent years.[1-3]Acohort study based on 246,459 Korean adults found a linear dose-response relationship between hypertension duration and stroke.[1]Another cohort study involving 15,472 White and 10,298 Black adults found that the hypertension duration-heart failure relationship was stronger for people with longer hypertension duration,and there was no evidence of race on the relationship.[2]Notably,prospective data from 39,774 coal workers in Chinese Han suggested that the risk of CVDs and stroke increased with increasing hypertension duration,but no associations of CVDs and stroke with myocardial infarction were found.[3]Importantly,to our knowledge,it remains unclear whether ethnicity differentially affects the associations between hypertension duration and CVDs in Chinese individuals.