TY - JOUR
T1 - Temperature modifies the association between particulate air pollution and mortality
T2 - A multi-city study in South Korea
AU - Kim, Satbyul Estella
AU - Lim, Youn-Hee
AU - Kim, Ho
N1 - Copyright © 2015 Elsevier B.V. All rights reserved.
PY - 2015/8/5
Y1 - 2015/8/5
N2 - Substantial epidemiologic literature has demonstrated the effects of air pollution and temperature on mortality. However, there is inconsistent evidence regarding the temperature modification effect on acute mortality due to air pollution. Herein, we investigated the effects of temperature on the relationship between air pollution and mortality due to non-accidental, cardiovascular, and respiratory death in seven cities in South Korea. We applied stratified time-series models to the data sets in order to examine whether the effects of particulate matter <10μm (PM10) on mortality were modified by temperature. The effect of PM10 on daily mortality was first quantified within different ranges of temperatures at each location using a time-series model, and then the estimates were pooled through a random-effects meta-analysis using the maximum likelihood method. From all the data sets, 828,787 non-accidental deaths were registered from 2000-2009. The highest overall risk between PM10 and non-accidental or cardiovascular mortality was observed on extremely hot days (daily mean temperature: >99th percentile) in individuals aged <65years. In those aged ≥65years, the highest overall risk between PM10 and non-accidental or cardiovascular mortality was observed on very hot days and not on extremely hot days (daily mean temperature: 95-99th percentile). There were strong harmful effects from PM10 on non-accidental mortality with the highest temperature range (>99th percentile) in men, with a very high temperature range (95-99th percentile) in women. Our findings showed that temperature can affect the relationship between the PM10 levels and cause-specific mortality. Moreover, the differences were apparent after considering the age and sex groups.
AB - Substantial epidemiologic literature has demonstrated the effects of air pollution and temperature on mortality. However, there is inconsistent evidence regarding the temperature modification effect on acute mortality due to air pollution. Herein, we investigated the effects of temperature on the relationship between air pollution and mortality due to non-accidental, cardiovascular, and respiratory death in seven cities in South Korea. We applied stratified time-series models to the data sets in order to examine whether the effects of particulate matter <10μm (PM10) on mortality were modified by temperature. The effect of PM10 on daily mortality was first quantified within different ranges of temperatures at each location using a time-series model, and then the estimates were pooled through a random-effects meta-analysis using the maximum likelihood method. From all the data sets, 828,787 non-accidental deaths were registered from 2000-2009. The highest overall risk between PM10 and non-accidental or cardiovascular mortality was observed on extremely hot days (daily mean temperature: >99th percentile) in individuals aged <65years. In those aged ≥65years, the highest overall risk between PM10 and non-accidental or cardiovascular mortality was observed on very hot days and not on extremely hot days (daily mean temperature: 95-99th percentile). There were strong harmful effects from PM10 on non-accidental mortality with the highest temperature range (>99th percentile) in men, with a very high temperature range (95-99th percentile) in women. Our findings showed that temperature can affect the relationship between the PM10 levels and cause-specific mortality. Moreover, the differences were apparent after considering the age and sex groups.
KW - Adult
KW - Aged
KW - Air Pollutants
KW - Air Pollution/statistics & numerical data
KW - Cardiovascular Diseases/mortality
KW - Cities
KW - Environmental Exposure/statistics & numerical data
KW - Female
KW - Humans
KW - Male
KW - Middle Aged
KW - Particulate Matter/analysis
KW - Republic of Korea/epidemiology
KW - Respiratory Tract Diseases/epidemiology
KW - Temperature
KW - Young Adult
U2 - 10.1016/j.scitotenv.2015.03.137
DO - 10.1016/j.scitotenv.2015.03.137
M3 - Journal article
C2 - 25920070
SN - 0048-9697
VL - 524-525
SP - 376
EP - 383
JO - Science of the Total Environment
JF - Science of the Total Environment
ER -
