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Multicenter Study
. 2015 May;28(5):631-9.
doi: 10.1093/ajh/hpu189. Epub 2014 Oct 28.

Racial/ethnic differences in hypertension prevalence, treatment, and control for outpatients in northern California 2010-2012

Beinan Zhao  1 , Powell O Jose  1 , Jia Pu  1 , Sukyung Chung  1 , Irma B Ancheta  2 , Stephen P Fortmann  3 , Latha P Palaniappan  4
Affiliations
Multicenter Study

Racial/ethnic differences in hypertension prevalence, treatment, and control for outpatients in northern California 2010-2012

Beinan Zhao et al. Am J Hypertens. 2015 May.

Abstract

Background: Hypertension (HTN) is a known major cardiovascular disease risk factor, but prevalence, treatment, and control of HTN among rapidly growing minority groups such as Asian Americans and Hispanics are unknown largely due to either underrepresentation in epidemiologic studies or aggregation of Asian American subgroups.

Methods: A three-year cross-section (2010-2012) of patients from a large ambulatory care setting in northern California was examined in the following subgroups: Asian Indian, Chinese, Filipino, Japanese, Korean, Vietnamese, Mexicans, non-Hispanic Blacks (NHBs), and non-Hispanic Whites (NHWs). We defined HTN as two separate nonemergent office visit blood pressure measurements ≥140/90 mm Hg, physician diagnosis of HTN, or use of antihypertensive medications.

Results: A total of 208,985 patients were included in the study. Age-adjusted HTN prevalence ranged from 30.0% in Chinese women to 59.9% in Filipino men. Most minority subgroups had lower or similar odds of having HTN compared with NHWs, except for Filipinos and NHBs whose odds were significantly higher after adjusting for patient demographic and clinical characteristics. Asian Americans and NHBs were more likely to be treated for HTN compared with NHWs. Achievement of blood pressure control was lower among Filipino women (odds ratio = 0.82, 99% confidence interval 0.70-0.96) and NHB men (odds ratio = 0.73, 99% confidence interval 0.58-0.91), compared with NHW women and men.

Conclusions: Substantial racial/ethnic variation in HTN prevalence, treatment, and control was found in our study population. Filipino and NHB women and men are at especially high risk for HTN and may have more difficulty in achieving adequate blood pressure control.

Keywords: blood pressure; control; epidemiology; hypertension; prevalence; race/ethnicity; treatment..

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