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学术报告
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Semi-parametric Models for Longitudinal Count Responses with Overdispersion and Structural Zeros
【2013.3.11 10:00am,S709】

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 2013-3-08 

  Colloquia & Seminars 

  Speaker

  Prof. Wan Tang, University of Rochester Dept of Biostatistics and Computational Biology

  Title

   Semi-parametric Models for Longitudinal Count Responses with Overdispersion and Structural Zeros

  Time

  2013.3.11 10:00am 

  Venue

  S709

  Abstract

   Overdispersion and structural zeros are two major manifestations of departure from the Poisson assumption when modeling count responses using Poisson loglinear regression. Ignoring such departures could yield bias and lead to wrong conclusions. Different approaches have been developed to tackle these two major problems. In this talk, we review available methods for dealing with overdispersion and structural zeros within a longitudinal data setting and propose a new semi-parametric modeling approach to address the limitations of these methods. We illustrate our approach with both simulated and real study data.

  Affiliation

   

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