本文试用圆形分布法对1987年四川省20个城、乡疾病监测点内1544名意外死亡资料进行了意外死亡高峰期分析。圆形分布的平均角表示死亡的集中方向,将死亡时间转换成角度,全年以365天计算,相当于360°,一天相当于0.986301°。若以元旦零时为零角度,全年每月角度均可据此确定,同时并做角均数的假设检验。 In this paper, a circular distribution method was used to analyze the peak accidental death rate of 1544 accidental deaths in 20 urban and rural disease surveillance sites in 1987 in Sichuan Province. The average angle of the circular distribution indicates the concentrated direction of death, and the death time is converted into an angle. The annual average is 365 days, equivalent to 360 ° and equivalent to 0.986301 ° in one day. If the zero-point zero at New Year’s Day, the annual monthly perspective can be determined accordingly, and do the hypothesis test.