Racial and Urban-Rural Difference in the Frequency of Ischemic Stroke as Initial Manifestation of Atrial Fibrillation

Objective: Atrial fibrillation (AF) may remain undiagnosed until the development of complications. We aimed to examine the epidemiology and racial/ethnic and rural/urban differences in the frequency of newly diagnosed AF manifesting as ischemic stroke in a nationally representative sample of Medicar...

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Autores principales: Jingchuan Guo, Nico Gabriel, Jared W. Magnani, Utibe R. Essien, Walid F. Gellad, Maria M. Brooks, Ludovic Trinquart, Emelia J. Benjamin, Inmaculada Hernandez
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Publicado: Frontiers Media S.A. 2021
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spelling oai:doaj.org-article:8a909ff7f57645b5bed50b5c65a7013f2021-11-05T06:19:49ZRacial and Urban-Rural Difference in the Frequency of Ischemic Stroke as Initial Manifestation of Atrial Fibrillation2296-256510.3389/fpubh.2021.780185https://doaj.org/article/8a909ff7f57645b5bed50b5c65a7013f2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fpubh.2021.780185/fullhttps://doaj.org/toc/2296-2565Objective: Atrial fibrillation (AF) may remain undiagnosed until the development of complications. We aimed to examine the epidemiology and racial/ethnic and rural/urban differences in the frequency of newly diagnosed AF manifesting as ischemic stroke in a nationally representative sample of Medicare beneficiaries.Methods: We used a 5% random sample of Medicare claims to identify patients newly diagnosed with AF in 2016. The primary dependent variable was stroke or transient ischemic attack (TIA) in the 7 days prior to the first AF diagnosis, i.e., stroke or TIA as the initial manifestation of AF. We constructed a multivariable logistic regression to quantify the association between race/ethnicity, urban/rural residence, and the primary dependent variable.Results: Among 39,409 patients newly diagnosed with AF (mean age 77 ± 10 years; 58% women; 7.2% Black, 87.8% White, 5.1% others), 2,819 (7.2%) had ischemic stroke or TIA in the 7 days prior to AF diagnosis. Black patients (adjusted OR [95% CI]: 1.21 [1.05, 1.40], vs. White) and urban residents (1.21 [1.08, 1.35], vs. rural) were at increased risk of stroke as the initial manifestation of AF. Racial differences were larger among patients aged ≥75 years, with adjusted ORs of 1.43 (1.19, 1.73) for Black vs. White patients, but non-significant for those aged <75 (P for interaction = 0.03).Conclusion: We observed significant and important differences in the risk of stroke as initial manifestation of AF between White and Black patients and between rural and urban residents. Our results suggest potential disparities in the identification AF across race/ethnicity groups and urban/rural areas.Jingchuan GuoJingchuan GuoJingchuan GuoNico GabrielJared W. MagnaniUtibe R. EssienUtibe R. EssienWalid F. GelladWalid F. GelladMaria M. BrooksLudovic TrinquartEmelia J. BenjaminInmaculada HernandezInmaculada HernandezFrontiers Media S.A.articleatrial fibrillationischemic strokeracial differencesurban/ruralMedicare claimsPublic aspects of medicineRA1-1270ENFrontiers in Public Health, Vol 9 (2021)
institution DOAJ
collection DOAJ
language EN
topic atrial fibrillation
ischemic stroke
racial differences
urban/rural
Medicare claims
Public aspects of medicine
RA1-1270
spellingShingle atrial fibrillation
ischemic stroke
racial differences
urban/rural
Medicare claims
Public aspects of medicine
RA1-1270
Jingchuan Guo
Jingchuan Guo
Jingchuan Guo
Nico Gabriel
Jared W. Magnani
Utibe R. Essien
Utibe R. Essien
Walid F. Gellad
Walid F. Gellad
Maria M. Brooks
Ludovic Trinquart
Emelia J. Benjamin
Inmaculada Hernandez
Inmaculada Hernandez
Racial and Urban-Rural Difference in the Frequency of Ischemic Stroke as Initial Manifestation of Atrial Fibrillation
description Objective: Atrial fibrillation (AF) may remain undiagnosed until the development of complications. We aimed to examine the epidemiology and racial/ethnic and rural/urban differences in the frequency of newly diagnosed AF manifesting as ischemic stroke in a nationally representative sample of Medicare beneficiaries.Methods: We used a 5% random sample of Medicare claims to identify patients newly diagnosed with AF in 2016. The primary dependent variable was stroke or transient ischemic attack (TIA) in the 7 days prior to the first AF diagnosis, i.e., stroke or TIA as the initial manifestation of AF. We constructed a multivariable logistic regression to quantify the association between race/ethnicity, urban/rural residence, and the primary dependent variable.Results: Among 39,409 patients newly diagnosed with AF (mean age 77 ± 10 years; 58% women; 7.2% Black, 87.8% White, 5.1% others), 2,819 (7.2%) had ischemic stroke or TIA in the 7 days prior to AF diagnosis. Black patients (adjusted OR [95% CI]: 1.21 [1.05, 1.40], vs. White) and urban residents (1.21 [1.08, 1.35], vs. rural) were at increased risk of stroke as the initial manifestation of AF. Racial differences were larger among patients aged ≥75 years, with adjusted ORs of 1.43 (1.19, 1.73) for Black vs. White patients, but non-significant for those aged <75 (P for interaction = 0.03).Conclusion: We observed significant and important differences in the risk of stroke as initial manifestation of AF between White and Black patients and between rural and urban residents. Our results suggest potential disparities in the identification AF across race/ethnicity groups and urban/rural areas.
format article
author Jingchuan Guo
Jingchuan Guo
Jingchuan Guo
Nico Gabriel
Jared W. Magnani
Utibe R. Essien
Utibe R. Essien
Walid F. Gellad
Walid F. Gellad
Maria M. Brooks
Ludovic Trinquart
Emelia J. Benjamin
Inmaculada Hernandez
Inmaculada Hernandez
author_facet Jingchuan Guo
Jingchuan Guo
Jingchuan Guo
Nico Gabriel
Jared W. Magnani
Utibe R. Essien
Utibe R. Essien
Walid F. Gellad
Walid F. Gellad
Maria M. Brooks
Ludovic Trinquart
Emelia J. Benjamin
Inmaculada Hernandez
Inmaculada Hernandez
author_sort Jingchuan Guo
title Racial and Urban-Rural Difference in the Frequency of Ischemic Stroke as Initial Manifestation of Atrial Fibrillation
title_short Racial and Urban-Rural Difference in the Frequency of Ischemic Stroke as Initial Manifestation of Atrial Fibrillation
title_full Racial and Urban-Rural Difference in the Frequency of Ischemic Stroke as Initial Manifestation of Atrial Fibrillation
title_fullStr Racial and Urban-Rural Difference in the Frequency of Ischemic Stroke as Initial Manifestation of Atrial Fibrillation
title_full_unstemmed Racial and Urban-Rural Difference in the Frequency of Ischemic Stroke as Initial Manifestation of Atrial Fibrillation
title_sort racial and urban-rural difference in the frequency of ischemic stroke as initial manifestation of atrial fibrillation
publisher Frontiers Media S.A.
publishDate 2021
url https://doaj.org/article/8a909ff7f57645b5bed50b5c65a7013f
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