CorrespondenceAppropriate Statistical Treatment of Frequent Emergency Department Visits in Health Services Research
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2014, Journal of Allergy and Clinical Immunology: In PracticeCitation Excerpt :In a sensitivity analysis, we also constructed a negative binomial regression model. This model has the advantages that there is no need to define arbitrary cutoff points of the ED utilization and that the model appropriately accounts for statistical overdispersion.13,14 We also used a generalized estimating equation to account for patient clustering within the EDs.
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2009, Journal of Clinical EpidemiologyCitation Excerpt :Several statistical approaches, such as overdispersed Poisson model or negative binomial model, appropriately take into account intraindividual dependence [63,65], but they are not widely known. Alternatively, one can dichotomize patients into frequent and infrequent exacerbators, using an arbitrary cutoff, but this leads to a significant loss of statistical power [66]. Similarly, modeling only the first event would discard useful information about subsequent, recurrent events.
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