Association between air temperature and heart disease death rates in Georgia counties

Hdl Handle:
http://hdl.handle.net/10675.2/617254
Title:
Association between air temperature and heart disease death rates in Georgia counties
Authors:
Hart, John
Abstract:
Background: In this ecological study, global warming theory was tested on a local level, in Georgia. The hypothesis was that warmer counties would be associated with higher death rates. Methods: Heart disease death rates (HDDR) for 2008-2010 by Georgia county were compared to air temperature, also by county for the same years. Three race categories for HDDR were studied: black, white, and all races. Since there is evidence that living at higher land elevations provides a protective effect against heart disease, land elevation by county was included as a second predictor. Results: Correlation analyses revealed low strength, statistically significant correlations with white and all races HDDR as follows: direct for air temperature and indirect for land elevation. Correlations for blacks were negligible strength and statistically non-significant. Thus, multiple linear regressions (MLRs) were considered appropriate for whites and all race HDDR. In MLRs, temperature and elevation essentially cancelled each other relative to HDDR, resulting in statistically non-significant regression coefficients for each in both race categories (p > 0.15). This may have in part been due to the slight collinearity that was observed between the two predictors (variance inflation factor = 10.6 for both predictors in both race categories). The study is limited by: a) its (ecological) design, where individual exposures are unknown; and b) the-less-than ideal regression model that revealed slight collinearity between the predictors. Further research is required to verify these findings. Conclusions:
Publisher:
Georgia Public Health Association
Journal:
Journal of the Georgia Public Health Association
Issue Date:
19-Jul-2016
URI:
http://hdl.handle.net/10675.2/617254
Additional Links:
http://www.gapha.org/jgpha/jgpha-archives/
Type:
Article
Language:
en_US
Appears in Collections:
jGPHA Volume 5, Number 1 (2015)

Full metadata record

DC FieldValue Language
dc.contributor.authorHart, Johnen
dc.date.accessioned2016-07-19T19:30:59Z-
dc.date.available2016-07-19T19:30:59Z-
dc.date.issued2016-07-19-
dc.identifier.urihttp://hdl.handle.net/10675.2/617254-
dc.description.abstractBackground: In this ecological study, global warming theory was tested on a local level, in Georgia. The hypothesis was that warmer counties would be associated with higher death rates. Methods: Heart disease death rates (HDDR) for 2008-2010 by Georgia county were compared to air temperature, also by county for the same years. Three race categories for HDDR were studied: black, white, and all races. Since there is evidence that living at higher land elevations provides a protective effect against heart disease, land elevation by county was included as a second predictor. Results: Correlation analyses revealed low strength, statistically significant correlations with white and all races HDDR as follows: direct for air temperature and indirect for land elevation. Correlations for blacks were negligible strength and statistically non-significant. Thus, multiple linear regressions (MLRs) were considered appropriate for whites and all race HDDR. In MLRs, temperature and elevation essentially cancelled each other relative to HDDR, resulting in statistically non-significant regression coefficients for each in both race categories (p > 0.15). This may have in part been due to the slight collinearity that was observed between the two predictors (variance inflation factor = 10.6 for both predictors in both race categories). The study is limited by: a) its (ecological) design, where individual exposures are unknown; and b) the-less-than ideal regression model that revealed slight collinearity between the predictors. Further research is required to verify these findings. Conclusions:en
dc.language.isoen_USen
dc.publisherGeorgia Public Health Associationen
dc.relation.urlhttp://www.gapha.org/jgpha/jgpha-archives/en
dc.subjectAfrican Americanen
dc.subjectGlobal Warmingen
dc.subjectHumansen
dc.subjectHeart Diseasesen
dc.titleAssociation between air temperature and heart disease death rates in Georgia countiesen_US
dc.typeArticleen
dc.identifier.journalJournal of the Georgia Public Health Associationen
All Items in Scholarly Commons are protected by copyright, with all rights reserved, unless otherwise indicated.