NDLI: Score tests for heterogeneity and overdispersion in zero-inflated Poisson and binomial regression models

Content Provider	Semantic Scholar
Author	Hall, Daniel B. Berenhaut, Kenneth S.
Copyright Year	2002
Abstract	Hall (2000) has described zero-inflated Poisson and binomial regression models that include ran- dom effects to account for excess zeros and additional sources of heterogeneity in the data. The authors of the present paper propose a general score test for the null hypothesis that variance components associated with these random effects are zero. For a zero-inflated Poisson model with random intercept, the new test reduces to an alternative to the overdispersion test of Ridout, Dem´ etrio & Hinde (2001). The authors also examine their general test in the special case of the zero-inflated binomial model with random intercept and propose an overdispersion test in that context which is based on a beta-binomial alternative. Tests scores d'h ´ et ´ erog ´ en ´ eit ´ e et de surdispersion dans des mod ` eles de r ´ egression binomiaux et de Poisson avec surplus de z ´ eros
Starting Page	415
Ending Page	430
Page Count	16
File Format	PDF HTM / HTML
DOI	10.2307/3316145
Volume Number	30
Alternate Webpage(s)	https://sakai.wfu.edu/access/content/group/26f503c9-bec7-4bb7-bdab-82ed8fda9d39/publications/berenhaut/stcjs02.pdf
Alternate Webpage(s)	https://www.researchgate.net/profile/Kenneth_Berenhaut/publication/227687487_Score_tests_for_heterogeneity_and_overdispersion_in_zeroinflated_Poisson_and_binomial_regression_models/links/00b7d524ae16643fd5000000.pdf
Alternate Webpage(s)	https://faculty.franklin.uga.edu/dhall/sites/faculty.franklin.uga.edu.dhall/files/ziscoretestproofs2.pdf
Alternate Webpage(s)	https://sakai.wfu.edu/access/content/group/26f503c9-bec7-4bb7-bdab-82ed8fda9d39/WebPostings/KenBerenhaut/62.habe02.62.pdf
Alternate Webpage(s)	http://www.math.wfu.edu/Faculty/KenBerenhaut/62.habe02.62.pdf
Alternate Webpage(s)	https://doi.org/10.2307/3316145
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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