title: High temperature as a risk factor for infectious diarrhea in Shanghai, China.
abstract: BACKGROUND
  Recent studies indicate that ambient temperature could be a risk factor for infectious diarrhea, but evidence for such a relation is limited in China.
  
  
  METHODS
  We investigated the short-term association between daily temperature and physician-diagnosed infectious diarrhea during 2008-2010 in Shanghai, China. We adopted a time-series approach to analyze the data and a quasi-Poisson regression model with a natural spline-smoothing function to adjust for long-term and seasonal trends, as well as other time-varying covariates.
  
  
  RESULTS
  There was a significant association between temperature and outpatient visits for diarrhea. A 1°C increase in the 6-day moving average of temperature was associated with a 2.68% (95% CI: 1.83%, 3.52%) increase in outpatient visits for diarrhea. We did not find a significant association between rainfall and infectious diarrhea.
  
  
  CONCLUSIONS
  High temperature might be a risk factor for infectious diarrhea in Shanghai. Public health programs should focus on preventing diarrhea related to high temperature among city residents.
authors.affiliation: School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University.
authors.forename: Xiaodan
authors.initials: X
authors.lastname: Zhou
authors.forename: Yanbing
authors.initials: Y
authors.lastname: Zhou
authors.forename: Renjie
authors.initials: R
authors.lastname: Chen
authors.forename: Wenjuan
authors.initials: W
authors.lastname: Ma
authors.forename: Haiju
authors.initials: H
authors.lastname: Deng
authors.forename: Haidong
authors.initials: H
authors.lastname: Kan
mesh_terms: D000328:Adult; D000553:Ambulatory Care / Q000706:statistics & numerical data*; D002648:Child; D002681:China / Q000453:epidemiology; D004403:Dysentery / Q000175:diagnosis* / Q000453:epidemiology; D006358:Hot Temperature / Q000009:adverse effects*; D006801:Humans; D012307:Risk Factors; D013997:Time Factors