title: Air pollution and hospital admissions for respiratory diseases in Lanzhou, China.
abstract: Lanzhou is among the most seriously air-polluted cities in China as a whole, due to its unique topography, climate, industrial structure and so on. We studied the relationship between different air pollution and respiratory hospitalizations from 2001 to 2005, the total of respiratory hospital admissions were 28,057. The data were analyzed using Poisson regression models after controlling for the long time trend for air pollutants, the "day of week" effect and confounding meteorological factors. Three air pollutants (PM10, SO2, NO2) had a lag effect, the lag was 3-5 days for PM10, 1-3 days for SO2 and 1-4 days for NO2. The relative risks were calculated for increases in the inter-quartile range of the pollutants (139 μg/m(3) in PM10, 61 μg/m(3) in SO2 and 31 μg/m(3) in NO2). Results showed that there were significant associations between air pollutants and respiratory hospital admissions, and stronger effects were observed for females and aged ≥65 yrs in Lanzhou.
authors.affiliation: College of Earth and Environmental Sciences, Lanzhou University, 222 Tianshuinanlu, Lanzhou 730000, China. Electronic address: taoyan@lzu.edu.cn.
authors.forename: Yan
authors.initials: Y
authors.lastname: Tao
authors.affiliation: College of Applied Arts and Science of Beijing Union University, Beijing 100191, China. Electronic address: msq365@hotmail.com.
authors.forename: Shengquan
authors.initials: S
authors.lastname: Mi
authors.affiliation: Gansu Provincial Hospital, Lanzhou 730000, China. Electronic address: zshlz1973@126.com.
authors.forename: Shuhong
authors.initials: S
authors.lastname: Zhou
authors.affiliation: College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China. Electronic address: wangsg@lzu.edu.cn.
authors.forename: Shigong
authors.initials: S
authors.lastname: Wang
authors.affiliation: College of Earth and Environmental Sciences, Lanzhou University, 222 Tianshuinanlu, Lanzhou 730000, China. Electronic address: xiexiaoyun@lzu.edu.cn.
authors.forename: Xiaoyun
authors.initials: X
authors.lastname: Xie
mesh_terms: D000393:Air Pollutants / Q000032:analysis; D000397:Air Pollution / Q000706:statistics & numerical data*; D002681:China / Q000453:epidemiology; D002980:Climate; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D012140:Respiratory Tract Diseases / Q000453:epidemiology*
chemical_list: D000393:Air Pollutants
keywords: Air pollution; Chronic obstructive pulmonary disease; Hospital admission; Pneumonia; Upper respiratory tract infection