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Effect modification of the association between temperature variability and daily cardiovascular mortality by air pollutants in three Chinese cities
Luo, Kai1,2; Li, Runkui3; Wang, Zongshuang4,5; Zhang, Ruiming1,2; Xu, Qun1,2
2017-11-01
Source PublicationENVIRONMENTAL POLLUTION
ISSN0269-7491
Volume230Pages:989-999
Corresponding AuthorXu, Qun(xuqun@ibms.cams.cn)
AbstractThere is limited evidence showing the mortality effects of temperature variability (TV) on cardiovascular diseases. The joint effects between TV and air pollutants are also less well-established. This study aims to assess the effect modification of TV-cardiovascular mortality by air pollutants in three Chinese cities (Beijing, Nanjing and Chengdu). Data of daily mortality, air pollutants and meteorological factors from 2008 to 2011 was collected from each city. TV was calculated as the standard deviation of daily maximum and minimum temperatures over exposure days. The city-specific effect estimates of TV on cardiovascular mortality were calculated using a quasi-Poisson regression model, adjusting for potential confounders (e.g., seasonality and temperature). An interaction term of TV and a three-level air pollutants stratum indicator was included in the models. Effect modifications by air pollutants were assessed by comparing the estimates of TV's effect between pollutant stratums and calculating the corresponding 95% confidential interval of the differences. Multivariate meta-analysis was conducted to obtain the pooled estimates. The data showed that TV was associated with increased risk of cardiovascular mortality, especially for longer TV exposure days (0-8 days, TV08). This association was still observed after adjusting for air pollutants on current day or the previous two days. Stronger estimates were observed in females, but no significant difference between males and females was detected, indicating the absence of evidence of effect modification by gender. Estimates of TV-cardiovascular mortality varied across two season periods (warm and cool season) and age groups, but the evidence of effect modification by age and seasons was absent. Regarding the effect modification of TV-cardiovascular mortality association by air pollutants, a significant effect modification was identified for PM10, but not for NO2 and SO2 in the whole population for all TV exposure days. This finding also persisted in subgroups, specifically in females and the elderly. (C) 2017 Elsevier Ltd. All rights reserved.
KeywordTemperature variability Particulate matter Effect modification Cardiovascular mortality China
DOI10.1016/j.envpol.2017.07.045
WOS KeywordTIME-SERIES ANALYSIS ; PARTICULATE MATTER ; UNITED-STATES ; AMBIENT-TEMPERATURE ; CLIMATE-CHANGE ; HEAT WAVES ; US CITIES ; POLLUTION ; RANGE ; IMPACT
Indexed BySCI
Language英语
Funding ProjectChinese Ministry of Environmental Protection[200909016] ; China Medical Board[15-230]
Funding OrganizationChinese Ministry of Environmental Protection ; China Medical Board
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000412250900103
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/62301
Collection中国科学院地理科学与资源研究所
Corresponding AuthorXu, Qun
Affiliation1.Chinese Acad Med Sci, Peking Union Med Coll, Sch Basic Med, Dept Epidemiol & Biostat,Inst Basic Med Sci, Beijing 100005, Peoples R China
2.Chinese Acad Med Sci, Peking Union Med Coll, Ctr Environm & Hlth Sci, Beijing 100005, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
5.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Luo, Kai,Li, Runkui,Wang, Zongshuang,et al. Effect modification of the association between temperature variability and daily cardiovascular mortality by air pollutants in three Chinese cities[J]. ENVIRONMENTAL POLLUTION,2017,230:989-999.
APA Luo, Kai,Li, Runkui,Wang, Zongshuang,Zhang, Ruiming,&Xu, Qun.(2017).Effect modification of the association between temperature variability and daily cardiovascular mortality by air pollutants in three Chinese cities.ENVIRONMENTAL POLLUTION,230,989-999.
MLA Luo, Kai,et al."Effect modification of the association between temperature variability and daily cardiovascular mortality by air pollutants in three Chinese cities".ENVIRONMENTAL POLLUTION 230(2017):989-999.
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