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Ambient temperature and outpatient visits for acute exacerbation of chronic bronchitis in Shanghai: a time series analysis. | LitMetric

Ambient temperature and outpatient visits for acute exacerbation of chronic bronchitis in Shanghai: a time series analysis.

Biomed Environ Sci

Department of Occupational Medicine, Yangpu Hospital, Tongji University School of Medicine, Shanghai 200090, China; Department of Occupational Medicine, Yangpu District Central Hospital, Shanghai 200090, China; Institute of Occupational and Environmental Medicine, Medical School, Tongji University School of Medicine, Shanghai 200090, China.

Published: January 2015

AI Article Synopsis

Article Abstract

The association between ambient temperature and acute exacerbation of chronic bronchitis (AECB) was still unknown. Therefore, we performed an epidemiological study in a large hospital of Shanghai to explore the relationship about temperature and outpatient visit for AECB. We adopted a quasi-Poisson generalized additive models and distributed lag nonlinear models to estimate the accumulative effects of temperature on AECB across multiple days. We found significant non-linear effects of cold temperature on hospital visits for AECB, and the potential effect of cold temperature might last more than 2 weeks. The relative risks of extreme cold (first percentiles of temperature throughout the study period) and cold (10th percentile of temperature) temperature over lags 0-14 d were 2.98 [95% confidence intervals (CI): 1.77, 5.04] and 1.63 (95% CI: 1.21, 2.19), compared with the 25th percentile of temperature. However, we found no positive association between hospital visits and hot weather. This study showed that exposure to both extreme cold and cold temperatures were associated with increased outpatient visits for AECB in a large hospital of Shanghai.

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Source
http://dx.doi.org/10.3967/bes2015.008DOI Listing

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