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Published on: July 3, 2020
The role of generalized linear models in handling cost and count data
Christopher S Lee1,2, Catherine Conway1
1Boston College William F. Connell School of Nursing, 140 Commonwealth Avenue, Maloney Hall 226, Chestnut Hill, MA 02467, USA.
Abstract:
Scientists from nursing and allied health disciplines frequently examine data with complex distributions. Key examples include data on cost that typically are skewed, and count data like the number of hospitalizations that regularly have greater variation than expected and a majority of observations at zero. Common approaches to handling complex data involve transformations that can interfere with interpretation, or force-fitting of data into linear or logistic regression. In this article, worked examples of generalized linear models, which allow for flexibility in the distribution of data, involving cost and count outcomes, are presented to help expose researchers to their nuances.
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