许多报告致死性疾病的发生都有时间特异性,本文通过研究中风流行病学的发病时间危险性,以探讨其日、周和年的节律性。材料和方法复习1971～1988年12月收治的所有中风病人的临床记录,仅限于医院外急性起病,症状 Many reports of lethal diseases have time-specific, this article by studying the risk of onset of stroke epidemiology in order to explore the rhythm of its day, week and year. Materials and Methods Clinical records of all stroke patients who were reviewed from 1971 to December 1988 were limited to acute onset outside the hospital and symptoms