Re: “The use of cusum analysis in the early detection and management of hospital bed occupancy crises”, the research article by Claire M Burns, Cameron J Bennett, Colin T Myers and Michael Ward, in the 19 September issue of the Journal (Med J Aust 2005; 183: 291-294). The first row of data in Box 1 should have read No. of samples (referring to the number of days in each 6-month study period, with one set of measurements being made each day), rather than No. of patients.
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