County‐Level Factors Associated With Cardiovascular Mortality by Race/Ethnicity

Background Persistent racial/ethnic disparities in cardiovascular disease (CVD) mortality are partially explained by healthcare access and socioeconomic, demographic, and behavioral factors. Little is known about the association between race/ethnicity‐specific CVD mortality and county‐level factors....

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Main Authors: Bongeka Z. Zuma, Justin T. Parizo, Areli Valencia, Gabriela Spencer‐Bonilla, Manuel R. Blum, David Scheinker, Fatima Rodriguez
Format: Article
Language:English
Published: Wiley 2021-03-01
Series:Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Subjects:
Online Access:https://www.ahajournals.org/doi/10.1161/JAHA.120.018835
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author Bongeka Z. Zuma
Justin T. Parizo
Areli Valencia
Gabriela Spencer‐Bonilla
Manuel R. Blum
David Scheinker
Fatima Rodriguez
author_facet Bongeka Z. Zuma
Justin T. Parizo
Areli Valencia
Gabriela Spencer‐Bonilla
Manuel R. Blum
David Scheinker
Fatima Rodriguez
author_sort Bongeka Z. Zuma
collection DOAJ
description Background Persistent racial/ethnic disparities in cardiovascular disease (CVD) mortality are partially explained by healthcare access and socioeconomic, demographic, and behavioral factors. Little is known about the association between race/ethnicity‐specific CVD mortality and county‐level factors. Methods and Results Using 2017 county‐level data, we studied the association between race/ethnicity‐specific CVD age‐adjusted mortality rate (AAMR) and county‐level factors (demographics, census region, socioeconomics, CVD risk factors, and healthcare access). Univariate and multivariable linear regressions were used to estimate the association between these factors; R2 values were used to assess the factors that accounted for the greatest variation in CVD AAMR by race/ethnicity (non‐Hispanic White, non‐Hispanic Black, and Hispanic/Latinx individuals). There were 659 740 CVD deaths among non‐Hispanic White individuals in 2698 counties; 100 475 deaths among non‐Hispanic Black individuals in 717 counties; and 49 493 deaths among Hispanic/Latinx individuals across 267 counties. Non‐Hispanic Black individuals had the highest mean CVD AAMR (320.04 deaths per 100 000 individuals), whereas Hispanic/Latinx individuals had the lowest (168.42 deaths per 100 000 individuals). The highest CVD AAMRs across all racial/ethnic groups were observed in the South. In unadjusted analyses, the greatest variation (R2) in CVD AAMR was explained by physical inactivity for non‐Hispanic White individuals (32.3%), median household income for non‐Hispanic Black individuals (24.7%), and population size for Hispanic/Latinx individuals (28.4%). In multivariable regressions using county‐level factor categories, the greatest variation in CVD AAMR was explained by CVD risk factors for non‐Hispanic White individuals (35.3%), socioeconomic factors for non‐Hispanic Black (25.8%), and demographic factors for Hispanic/Latinx individuals (34.9%). Conclusions The associations between race/ethnicity‐specific age‐adjusted CVD mortality and county‐level factors differ significantly. Interventions to reduce disparities may benefit from being designed accordingly.
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spelling doaj.art-f235abdabc584c3eb7121e85794589282022-12-22T02:38:48ZengWileyJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease2047-99802021-03-0110610.1161/JAHA.120.018835County‐Level Factors Associated With Cardiovascular Mortality by Race/EthnicityBongeka Z. Zuma0Justin T. Parizo1Areli Valencia2Gabriela Spencer‐Bonilla3Manuel R. Blum4David Scheinker5Fatima Rodriguez6Stanford University School of Medicine Stanford CADivision of Cardiovascular Medicine and the Cardiovascular Institute Stanford University School of Medicine Stanford CAStanford University School of Medicine Stanford CADepartment of Medicine Stanford University School of Medicine Stanford CADepartment of General Internal Medicine Bern University HospitalUniversity of Bern SwitzerlandDepartment of Pediatrics Stanford University School of Medicine Stanford CADivision of Cardiovascular Medicine and the Cardiovascular Institute Stanford University School of Medicine Stanford CABackground Persistent racial/ethnic disparities in cardiovascular disease (CVD) mortality are partially explained by healthcare access and socioeconomic, demographic, and behavioral factors. Little is known about the association between race/ethnicity‐specific CVD mortality and county‐level factors. Methods and Results Using 2017 county‐level data, we studied the association between race/ethnicity‐specific CVD age‐adjusted mortality rate (AAMR) and county‐level factors (demographics, census region, socioeconomics, CVD risk factors, and healthcare access). Univariate and multivariable linear regressions were used to estimate the association between these factors; R2 values were used to assess the factors that accounted for the greatest variation in CVD AAMR by race/ethnicity (non‐Hispanic White, non‐Hispanic Black, and Hispanic/Latinx individuals). There were 659 740 CVD deaths among non‐Hispanic White individuals in 2698 counties; 100 475 deaths among non‐Hispanic Black individuals in 717 counties; and 49 493 deaths among Hispanic/Latinx individuals across 267 counties. Non‐Hispanic Black individuals had the highest mean CVD AAMR (320.04 deaths per 100 000 individuals), whereas Hispanic/Latinx individuals had the lowest (168.42 deaths per 100 000 individuals). The highest CVD AAMRs across all racial/ethnic groups were observed in the South. In unadjusted analyses, the greatest variation (R2) in CVD AAMR was explained by physical inactivity for non‐Hispanic White individuals (32.3%), median household income for non‐Hispanic Black individuals (24.7%), and population size for Hispanic/Latinx individuals (28.4%). In multivariable regressions using county‐level factor categories, the greatest variation in CVD AAMR was explained by CVD risk factors for non‐Hispanic White individuals (35.3%), socioeconomic factors for non‐Hispanic Black (25.8%), and demographic factors for Hispanic/Latinx individuals (34.9%). Conclusions The associations between race/ethnicity‐specific age‐adjusted CVD mortality and county‐level factors differ significantly. Interventions to reduce disparities may benefit from being designed accordingly.https://www.ahajournals.org/doi/10.1161/JAHA.120.018835cardiovascular disease mortalitydisparitiesrace/ethnicitysocial determinants
spellingShingle Bongeka Z. Zuma
Justin T. Parizo
Areli Valencia
Gabriela Spencer‐Bonilla
Manuel R. Blum
David Scheinker
Fatima Rodriguez
County‐Level Factors Associated With Cardiovascular Mortality by Race/Ethnicity
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
cardiovascular disease mortality
disparities
race/ethnicity
social determinants
title County‐Level Factors Associated With Cardiovascular Mortality by Race/Ethnicity
title_full County‐Level Factors Associated With Cardiovascular Mortality by Race/Ethnicity
title_fullStr County‐Level Factors Associated With Cardiovascular Mortality by Race/Ethnicity
title_full_unstemmed County‐Level Factors Associated With Cardiovascular Mortality by Race/Ethnicity
title_short County‐Level Factors Associated With Cardiovascular Mortality by Race/Ethnicity
title_sort county level factors associated with cardiovascular mortality by race ethnicity
topic cardiovascular disease mortality
disparities
race/ethnicity
social determinants
url https://www.ahajournals.org/doi/10.1161/JAHA.120.018835
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