Dear friends: I have just read an article entitled " Monitoring of nosocomial invasive aspergillosis and early evidence of an outbreak using cumulative sum tests (CUSUM)", which is published in "Clinical Microbiology and Infection". We have great need to estimate the fluctuation of incidence of IFI in our hospital. But I don't know the details of the stastical method and don't know where can I get a "Cusum" package. Can you give me some materials about Cusum test? An example is more appreciated. Yours sincerely Ping Zhang March 7, 2010 [[alternative HTML version deleted]]
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