Associations Between Residential Greenspace, Socioeconomic Status, and Stroke: A Matched Case-Control Study

Purpose: Studies have shown increased residential greenspace is associated with improved outcome following stroke. This study sought to determine if residential greenspace is an independent stroke risk factor. Methods: A retrospective 1:4 matched case-control study involving 1174 stroke and 4696...

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Main Authors: Heloise Cheruvalath, Jennifer K. Homa, Maharaj Singh, Paul Vilar, Amin Kassam, Richard A. Rovin
Format: Article
Language:English
Published: Advocate Aurora Health 2022-04-01
Series:Journal of Patient-Centered Research and Reviews
Subjects:
Online Access:https://institutionalrepository.aah.org/cgi/viewcontent.cgi?article=1886&context=jpcrr
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author Heloise Cheruvalath
Jennifer K. Homa
Maharaj Singh
Paul Vilar
Amin Kassam
Richard A. Rovin
author_facet Heloise Cheruvalath
Jennifer K. Homa
Maharaj Singh
Paul Vilar
Amin Kassam
Richard A. Rovin
author_sort Heloise Cheruvalath
collection DOAJ
description Purpose: Studies have shown increased residential greenspace is associated with improved outcome following stroke. This study sought to determine if residential greenspace is an independent stroke risk factor. Methods: A retrospective 1:4 matched case-control study involving 1174 stroke and 4696 control patients over a 3-year period from Milwaukee County, Wisconsin, was conducted. Greenspace was determined using normalized difference vegetation index (NDVI) for a 250-meter radius surrounding a subject’s residence. The area deprivation index (ADI) for the census block tract of a subject’s residence was obtained from the Neighborhood Atlas® (University of Wisconsin School of Medicine and Public Health). Relationship between greenspace, ADI, and stroke was determined using conditional logistic regression. Relationships among NDVI, state and national ADI, and proximity to public parks were determined using Spearman’s rank-order correlation. Results: NDVI and stroke risk were inversely correlated (odds ratio [OR]: 0.33, 95% CI: 0.111–0.975; P = 0.045), with 19% lowered odds of stroke for patients living in the highest greenspace quartile compared to the lowest quartile (OR: 0.81, 95% CI: 0.672–0.984; P = 0.045). Patients living in the most deprived ADI quartile had 28% greater stroke risk than those living in the least deprived ADI quartile (OR: 1.28, 95% CI: 1.02–1.6; P = 0.029). Non-Hispanic Black patients lived in residential areas with lower greenspace (P < 0.001) and neighborhoods of greater state and national ADI (P < 0.001 for both) than non-Hispanic White patients. Conclusions: In Milwaukee County, living with greater surrounding greenspace or areas of lower deprivation is associated with lower odds of stroke. NDVI represents an independent risk factor for stroke, not simply a proxy for socioeconomic status.
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spelling doaj.art-9d1530fcb0cc4fdda18c867a255e579f2023-09-03T06:14:47ZengAdvocate Aurora HealthJournal of Patient-Centered Research and Reviews2330-06982022-04-0192899710.17294/2330-0698.1886Associations Between Residential Greenspace, Socioeconomic Status, and Stroke: A Matched Case-Control StudyHeloise Cheruvalath0https://orcid.org/0000-0002-0617-5966Jennifer K. Homa1https://orcid.org/0000-0002-6557-9151Maharaj Singh2Paul Vilar3Amin Kassam4Richard A. Rovin 5https://orcid.org/0000-0003-2408-036XSmith College, Northampton, MAAdvocate Aurora Research Institute, Advocate Aurora Health, Milwaukee, WIAdvocate Aurora Research Institute, Advocate Aurora Health, Milwaukee, WI; Marquette University, Milwaukee, WIAurora Neuroscience Innovation Institute, Advocate Aurora Health, Milwaukee, WINeeka Health, Milwaukee, WIAurora Neuroscience Innovation Institute, Advocate Aurora Health, Milwaukee, WIPurpose: Studies have shown increased residential greenspace is associated with improved outcome following stroke. This study sought to determine if residential greenspace is an independent stroke risk factor. Methods: A retrospective 1:4 matched case-control study involving 1174 stroke and 4696 control patients over a 3-year period from Milwaukee County, Wisconsin, was conducted. Greenspace was determined using normalized difference vegetation index (NDVI) for a 250-meter radius surrounding a subject’s residence. The area deprivation index (ADI) for the census block tract of a subject’s residence was obtained from the Neighborhood Atlas® (University of Wisconsin School of Medicine and Public Health). Relationship between greenspace, ADI, and stroke was determined using conditional logistic regression. Relationships among NDVI, state and national ADI, and proximity to public parks were determined using Spearman’s rank-order correlation. Results: NDVI and stroke risk were inversely correlated (odds ratio [OR]: 0.33, 95% CI: 0.111–0.975; P = 0.045), with 19% lowered odds of stroke for patients living in the highest greenspace quartile compared to the lowest quartile (OR: 0.81, 95% CI: 0.672–0.984; P = 0.045). Patients living in the most deprived ADI quartile had 28% greater stroke risk than those living in the least deprived ADI quartile (OR: 1.28, 95% CI: 1.02–1.6; P = 0.029). Non-Hispanic Black patients lived in residential areas with lower greenspace (P < 0.001) and neighborhoods of greater state and national ADI (P < 0.001 for both) than non-Hispanic White patients. Conclusions: In Milwaukee County, living with greater surrounding greenspace or areas of lower deprivation is associated with lower odds of stroke. NDVI represents an independent risk factor for stroke, not simply a proxy for socioeconomic status.https://institutionalrepository.aah.org/cgi/viewcontent.cgi?article=1886&context=jpcrrgreenspacestrokearea deprivation indexndvisocioeconomic status
spellingShingle Heloise Cheruvalath
Jennifer K. Homa
Maharaj Singh
Paul Vilar
Amin Kassam
Richard A. Rovin
Associations Between Residential Greenspace, Socioeconomic Status, and Stroke: A Matched Case-Control Study
Journal of Patient-Centered Research and Reviews
greenspace
stroke
area deprivation index
ndvi
socioeconomic status
title Associations Between Residential Greenspace, Socioeconomic Status, and Stroke: A Matched Case-Control Study
title_full Associations Between Residential Greenspace, Socioeconomic Status, and Stroke: A Matched Case-Control Study
title_fullStr Associations Between Residential Greenspace, Socioeconomic Status, and Stroke: A Matched Case-Control Study
title_full_unstemmed Associations Between Residential Greenspace, Socioeconomic Status, and Stroke: A Matched Case-Control Study
title_short Associations Between Residential Greenspace, Socioeconomic Status, and Stroke: A Matched Case-Control Study
title_sort associations between residential greenspace socioeconomic status and stroke a matched case control study
topic greenspace
stroke
area deprivation index
ndvi
socioeconomic status
url https://institutionalrepository.aah.org/cgi/viewcontent.cgi?article=1886&context=jpcrr
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