The effects of ambient temperature on cerebrovascular mortality: an epidemiologic study in four climatic zones in China

摘要: Little evidence is available about the association between temperature and cerebrovascular mortality in China. This study aims to examine effects of ambient on different climatic zones We obtained daily data weather conditions, air pollution deaths from five cities (Beijing, Tianjin, Shanghai, Wuhan, Guangzhou) China during 2004-2008. examined city-specific associations mortality, while adjusting for season, long-term trends, day week, relative humidity pollution. cold using a 1°C decrease below threshold, hot increase above threshold. used meta-analysis summarize across cities. Beijing Tianjin (with low mean temperature) had lower thresholds than Wuhan Guangzhou high temperature). In Beijing, were delayed, Shanghai there was no or short induction. Hot acute all The lasted longer effects. followed by displacement. pooled risk associated with (cold effect) 1.037 (95% confidence interval (CI): 1.020, 1.053). (hot 1.014 CI: 0.979, 1.050). Cold temperatures are significantly China, effect not significant. People colder climate sensitive temperatures, people warmer vulnerable temperature.