Effect modification of the association between short-term meteorological factors and mortality by urban heat islands in Hong Kong.

<h4>Background</h4>Prior studies from around the world have indicated that very high temperatures tend to increase summertime mortality. However possible effect modification by urban micro heat islands has only been examined by a few studies in North America and Europe. This study examin...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	William B Goggins, Emily Y Y Chan, Edward Ng, Chao Ren, Liang Chen
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8e250fdaa9cc44868121f32f014dcd75
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:8e250fdaa9cc44868121f32f014dcd75
record_format	dspace
spelling	oai:doaj.org-article:8e250fdaa9cc44868121f32f014dcd752021-11-18T07:14:34ZEffect modification of the association between short-term meteorological factors and mortality by urban heat islands in Hong Kong.1932-620310.1371/journal.pone.0038551https://doaj.org/article/8e250fdaa9cc44868121f32f014dcd752012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22761684/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Prior studies from around the world have indicated that very high temperatures tend to increase summertime mortality. However possible effect modification by urban micro heat islands has only been examined by a few studies in North America and Europe. This study examined whether daily mortality in micro heat island areas of Hong Kong was more sensitive to short term changes in meteorological conditions than in other areas.<h4>Method</h4>An urban heat island index (UHII) was calculated for each of Hong Kong's 248 geographical tertiary planning units (TPU). Daily counts of all natural deaths among Hong Kong residents were stratified according to whether the place of residence of the decedent was in a TPU with high (above the median) or low UHII. Poisson Generalized Additive Models (GAMs) were used to estimate the association between meteorological variables and mortality while adjusting for trend, seasonality, pollutants and flu epidemics. Analyses were restricted to the hot season (June-September).<h4>Results</h4>Mean temperatures (lags 0-4) above 29 °C and low mean wind speeds (lags 0-4) were significantly associated with higher daily mortality and these associations were stronger in areas with high UHII. A 1 °C rise above 29 °C was associated with a 4.1% (95% confidence interval (CI): 0.7%, 7.6%) increase in natural mortality in areas with high UHII but only a 0.7% (95% CI: -2.4%, 3.9%) increase in low UHII areas. Lower mean wind speeds (5(th) percentile vs. 95(th) percentile) were associated with a 5.7% (95% CI: 2.7, 8.9) mortality increase in high UHII areas vs. a -0.3% (95% CI: -3.2%, 2.6%) change in low UHII areas.<h4>Conclusion</h4>The results suggest that urban micro heat islands exacerbate the negative health consequences of high temperatures and low wind speeds. Urban planning measures designed to mitigate heat island effects may lessen the health effects of unfavorable summertime meteorological conditions.William B GogginsEmily Y Y ChanEdward NgChao RenLiang ChenPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 6, p e38551 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q William B Goggins Emily Y Y Chan Edward Ng Chao Ren Liang Chen Effect modification of the association between short-term meteorological factors and mortality by urban heat islands in Hong Kong.
description	<h4>Background</h4>Prior studies from around the world have indicated that very high temperatures tend to increase summertime mortality. However possible effect modification by urban micro heat islands has only been examined by a few studies in North America and Europe. This study examined whether daily mortality in micro heat island areas of Hong Kong was more sensitive to short term changes in meteorological conditions than in other areas.<h4>Method</h4>An urban heat island index (UHII) was calculated for each of Hong Kong's 248 geographical tertiary planning units (TPU). Daily counts of all natural deaths among Hong Kong residents were stratified according to whether the place of residence of the decedent was in a TPU with high (above the median) or low UHII. Poisson Generalized Additive Models (GAMs) were used to estimate the association between meteorological variables and mortality while adjusting for trend, seasonality, pollutants and flu epidemics. Analyses were restricted to the hot season (June-September).<h4>Results</h4>Mean temperatures (lags 0-4) above 29 °C and low mean wind speeds (lags 0-4) were significantly associated with higher daily mortality and these associations were stronger in areas with high UHII. A 1 °C rise above 29 °C was associated with a 4.1% (95% confidence interval (CI): 0.7%, 7.6%) increase in natural mortality in areas with high UHII but only a 0.7% (95% CI: -2.4%, 3.9%) increase in low UHII areas. Lower mean wind speeds (5(th) percentile vs. 95(th) percentile) were associated with a 5.7% (95% CI: 2.7, 8.9) mortality increase in high UHII areas vs. a -0.3% (95% CI: -3.2%, 2.6%) change in low UHII areas.<h4>Conclusion</h4>The results suggest that urban micro heat islands exacerbate the negative health consequences of high temperatures and low wind speeds. Urban planning measures designed to mitigate heat island effects may lessen the health effects of unfavorable summertime meteorological conditions.
format	article
author	William B Goggins Emily Y Y Chan Edward Ng Chao Ren Liang Chen
author_facet	William B Goggins Emily Y Y Chan Edward Ng Chao Ren Liang Chen
author_sort	William B Goggins
title	Effect modification of the association between short-term meteorological factors and mortality by urban heat islands in Hong Kong.
title_short	Effect modification of the association between short-term meteorological factors and mortality by urban heat islands in Hong Kong.
title_full	Effect modification of the association between short-term meteorological factors and mortality by urban heat islands in Hong Kong.
title_fullStr	Effect modification of the association between short-term meteorological factors and mortality by urban heat islands in Hong Kong.
title_full_unstemmed	Effect modification of the association between short-term meteorological factors and mortality by urban heat islands in Hong Kong.
title_sort	effect modification of the association between short-term meteorological factors and mortality by urban heat islands in hong kong.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/8e250fdaa9cc44868121f32f014dcd75
work_keys_str_mv	AT williambgoggins effectmodificationoftheassociationbetweenshorttermmeteorologicalfactorsandmortalitybyurbanheatislandsinhongkong AT emilyyychan effectmodificationoftheassociationbetweenshorttermmeteorologicalfactorsandmortalitybyurbanheatislandsinhongkong AT edwardng effectmodificationoftheassociationbetweenshorttermmeteorologicalfactorsandmortalitybyurbanheatislandsinhongkong AT chaoren effectmodificationoftheassociationbetweenshorttermmeteorologicalfactorsandmortalitybyurbanheatislandsinhongkong AT liangchen effectmodificationoftheassociationbetweenshorttermmeteorologicalfactorsandmortalitybyurbanheatislandsinhongkong
_version_	1718423740439592960

Effect modification of the association between short-term meteorological factors and mortality by urban heat islands in Hong Kong.

Ejemplares similares