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Modelling Correlated zero-inflated count data

Dobbie, Melissa J; Welsh, Alan


This paper extends the two-component approach to modelling count data with extra zeros, considered by Mullahy (1986), Heilbron (1994) and Welsh et al. (1996), to take account of possible serial dependence between repeated observations. Generalized estimating equations (Liang & Zeger, 1986) are constructed for each component of the model by incorporating correlation matrices into each of the maximum likelihood estimating equations. The proposed method is demonstrated on weekly counts of Noisy...[Show more]

CollectionsANU Research Publications
Date published: 2001
Type: Journal article
Source: Australian and New Zealand Journal of Statistics


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