A new look at the difference between the GEE and the GLMM when modeling longitudinal count responses

H. Zhang, Q. Yu, C. Feng, D. Gunzler, P. Wu and X. M. Tu

Journal of Applied Statistics, 2012, vol. 39, issue 9, 2067-2079

Abstract: Poisson log-linear regression is a popular model for count responses. We examine two popular extensions of this model -- the generalized estimating equations (GEE) and the generalized linear mixed-effects model (GLMM) -- to longitudinal data analysis and complement the existing literature on characterizing the relationship between the two dueling paradigms in this setting. Unlike linear regression, the GEE and the GLMM carry significant conceptual and practical implications when applied to modeling count data. Our findings shed additional light on the differences between the two classes of models when used for count data. Our considerations are demonstrated by both real study and simulated data.

Date: 2012
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DOI: 10.1080/02664763.2012.700452

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