GW24-e2196Air pollution and emergency hospital visits for stroke in Changsha

ObjectivesTo investigate the association between air pollutants and emergency hospital visits (EHVs) for stroke in Changsha, China.MethodsThe daily EHVs for stroke were gathered from the third Xiangya hospital during 2008-2009. The corresponding air pollutants, meteorological data were collected. The seasonal-stratified case-crossover design with 1:1 matched pair was used to set up single-pollution models and multi-pollution models for the data analysis.ResultsAfter adjusting the temperature and relative humidity in single-pollution models, sulfur dioxide (SO2) and particulate matters with an aerodynamic diameter of