[Rate and characteristics of H-type hypertension in Chinese hypertensive population and comparison with American population].

objectiveTo study the rate and characteristics of H-type hypertension in Chinese hypertensive population, and to compare them with the relevant data from the United States.

methodsObservational studies on the prevalence of H-type hypertension in Chinese population published before April 30, 2022 were searched in several Chinese and English databases (PubMed, Embase, Web of Science, Cochrane Library, Chinese National Knowledge Infrastructure, Wanfang Databases, and Chinese Biome-dical Literature Database). Study selection, date extraction and quality evaluation were conducted. Random effect model was used to estimate the rate of H-type hypertension in hypertensive patients and the pooled prevalence of H-type hypertension. Stratified analysis was used to explore the distribution characteristics of H-type hypertension in China. We made meta-regression to search the source of heterogeneity. The National Health and Nutrition Examination Survey (NHANES) population from 1999 to 2006 in the United States was divided into four stages according to the time of data collection. Basic information of the participants was acquired from the database and the rate and prevalence of H-type hypertension analyzed.

resultsThis study was finally comprised of 33 studies, involving 78 470 patients with hypertension, among whom 59 842 patients were with H-type hypertension. The rate of H-type hypertension in hypertensive population in China was 73.1% (95%

conclusionAlthough the rate of H-type hypertension in Chinese hypertensive patients has a downtrend, it still far exceeds that in the United States, especially in the elderly, males, ethnic minorities, and residents in the inland, western, northern, and rural areas. Understanding the epidemiology of H-type hypertension provides scientific evidence for further prevention of cardiovascular and cerebrovascular diseases.