An Investigation of Changepoints in the Annual Number of Cases of Haemolytic Uraemic Syndrome
研究1980年代初腹泻相关溶血性尿毒综合征病例数是否突然增加，对纽卡斯尔和伯明翰两个地区的数据应用泊松变量变化点模型，分析均值变化的位置和数量。
SUMMARY There has been speculation that the number of cases of diarrhoea-associated haemolytic uraemic syndrome increased abruptly during the early part of the 1980s. To investigate this hypothesis, changepoint models for Poisson variables are applied to two series of data from regional referral units in Newcastle upon Tyne and Birmingham. The series are analysed both separately and jointly, with particular emphasis on determining the number and location of mean changes. The adequacy of the postulated models is considered.