Abstract Title:

Short-term air pollution exposure is associated with hospital length of stay and hospitalization costs among inpatients with type 2 diabetes: a hospital-based study.

Abstract Source:

J Toxicol Environ Health A. 2018 ;81(17):819-829. Epub 2018 Jul 17. PMID: 30015599

Abstract Author(s):

Xiang Li, Kai Tang, Xu-Rui Jin, Ying Xiang, Jing Xu, Li-Li Yang, Nan Wang, Ya-Fei Li, Ai-Ling Ji, Lai-Xin Zhou, Tong-Jian Cai

Article Affiliation:

Xiang Li


Air pollution is a risk factor for type 2 diabetes (T2D), exerting heavy economic burden on both individuals and societies. However, there is no apparent report regarding the influence of air pollutants such as particulate matter (PMand PM), sulfur dioxide (SO), carbon monoxide (CO), nitrogen dioxide (NO), and ozone (O) on financial burden to individuals and societies suffering from T2D. This study aimed to determine whether short-term (no more than 16 d) air pollution exposure was associated with T2D-related length of stay (LOS) and hospitalization expenses incurred by patients. This investigation examined 2840 T2D patients hospitalized from December 17, 2013 to May 31, 2016 in China. Multiple linear regression analysis was applied to determinethe association between short-term (no more than 16 d) ambient air pollution, LOS, and hospitalization expenses, controlling for age, gender, ethnicity, marital status, and weather conditions. Sulfur dioxide (SO) and carbon monoxide (CO) were significantly positively while nitrogen dioxide (NO) was negatively associated with presence of T2D, LOS, and expenses. A 10-μg/mrise in 16-d (lag 0-15) average concentrations of SOand CO prior to hospitalization was correlated with a significant elevation in LOS and elevation in expenses in T2D patients. However, a 10-μg/mrise in 16-d average NOwas associated with marked negative alterations in LOS and hospital costs in T2D patients. Taken together, data demonstrate that exposure to air pollutants impacts differently on LOS and hospitalization costs for T2D patients. This is the first apparent report regarding the correlation between air pollution exposure and clinical costs of T2D in China. It is of interest that air pollutants affected T2D patients differently as evidenced by LOS and clinical expenses where SOand CO exhibited a positive adverse relationship in contrast to NO.

Study Type : Human Study

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