title: The impact of ambient particle pollution during extreme-temperature days in Guangzhou City, China.
abstract: The aim of this study is to explore whether the effect of PM10 (particulate matter with an aerodynamic diameter of <10 µm) on daily mortality was modified by extreme temperatures in Guangzhou from 2005 to 2009. The present study used time-series analysis to explore the modification effects of temperature on the association between PM10 and the cause-specific mortalities for cardiovascular, respiratory, cardiopulmonary, and nonaccidental mortality. The interactions between PM10 and temperature were statistically significant on respiratory mortality. The effect estimates per 10-µg/m(3) increase in PM10 concentrations at the moving average of lags of 0 and 1 day on high-temperature days were 2.34% (95% confidence interval = 0.55, 4.16) for nonaccidental, 1.35% (-1.69, 4.48) for cardiovascular, 6.09% (2.42, 9.89) for respiratory, and 3.36% (0.92, 5.86) for cardiopulmonary mortalities. The results suggest that it is important to control and reduce the emission of air particles in Guangzhou, particularly on extreme-high-temperature days.
authors.affiliation: Peking University, Beijing, P R China.
authors.forename: Guoxing
authors.initials: G
authors.lastname: Li
authors.affiliation: Peking University, Beijing, P R China.
authors.forename: Lai
authors.initials: L
authors.lastname: Jiang
authors.affiliation: School of Public Health, Ningxia Medical University, Yinchuan City, China.
authors.forename: Yajuan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Chinese Center for Disease Control and Prevention, Beijing, P R China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Cai
authors.affiliation: Peking University, Beijing, P R China xcpan@bjmu.edu.cn maigengzhou@126.com.
authors.forename: Xiaochuan
authors.initials: X
authors.lastname: Pan
authors.affiliation: Chinese Center for Disease Control and Prevention, Beijing, P R China.
authors.forename: Maigeng
authors.initials: M
authors.lastname: Zhou
mesh_terms: D000397:Air Pollution / Q000009:adverse effects* / Q000032:analysis; D002318:Cardiovascular Diseases / Q000139:chemically induced / Q000401:mortality; D002681:China / Q000453:epidemiology; D002947:Cities; D006331:Heart Diseases / Q000139:chemically induced / Q000401:mortality; D006358:Hot Temperature / Q000009:adverse effects*; D006801:Humans; D008171:Lung Diseases / Q000139:chemically induced / Q000401:mortality; D009026:Mortality / Q000639:trends*; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis / Q000633:toxicity*; D012140:Respiratory Tract Diseases / Q000139:chemically induced / Q000401:mortality; D013997:Time Factors
chemical_list: D052638:Particulate Matter
keywords: interactive effects; mortality; particulate matter; temperature; time series