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| An analysis of time distribution characteristics of stroke patients in Wenzhou City by circular distribution methods |
| JIN Xiao-sheng, YE Kan, ZHANG Hao, ZHANG Gai, JIANG Yi
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| Emergency Medical Center Of Wenzhou City,Wenzhou,Zhejiang,325000,China |
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Abstract Objective To investigate the time distribution of pre-hospital emergency stroke patients,so as to provide recommendations for stroke prevention and control. Methods The information of 2 844 stroke patients from 2013 to 2016 was collected from emergency medical center of Wenzhou,and circular distribution method was used to analyze the seasonal stroke incidence. Results Both seasonal and daily occurrence of cerebralvascular accidents showed weak （all r<0.3）trends of centralization （all P<0.05）.The average angle for each year was not equal,and the average angle of 2014 was significantly different from the other years（P<0.05）. The peak time point of every year（except 2014） was on the 4th of January and the peak time period was from the 2nd of September to the 9th of May of next year. The average angle for every day was（230.965±108.999）°（P<0.05）,which suggested that the peak time point was 14∶35,and the peak time period was from 7∶19 to 21∶51. Conclusion Stroke morbidity has obvious seasonality in Wenzhou,and the peak time was in winter and spring. Besides,the cerebralvascular accidents occures more often in the day time.The time distribution characteristics of stroke patients should be considered when studying the causes of stroke.
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Received: 03 March 2017
Revised: 04 May 2017
Published: 12 October 2017
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