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Comparison of Different Count Models for Investigation of Some Environmental Factors Affecting Stillbirth in Holsteins

dc.authorid Gevrekci, Yakut/0000-0002-4915-2238
dc.authorid Isci Guneri, Oznur/0000-0003-3677-7121
dc.authorscopusid 9633572400
dc.authorscopusid 35798517000
dc.authorscopusid 6506660805
dc.authorscopusid 22036852300
dc.authorwosid Gevrekçi, Yakut/Aeq-5272-2022
dc.authorwosid Takma, Çiğdem/Gxg-5818-2022
dc.authorwosid Güneri, Öznur/Jfj-2006-2023
dc.contributor.author Gevrekci, Y.
dc.contributor.author Guneri, O. I.
dc.contributor.author Takma, C.
dc.contributor.author Yesilova, A.
dc.date.accessioned 2025-05-10T17:12:25Z
dc.date.available 2025-05-10T17:12:25Z
dc.date.issued 2022
dc.department T.C. Van Yüzüncü Yıl Üniversitesi en_US
dc.department-temp [Gevrekci, Y.; Takma, C.] Univ Ege, Dept Anim Sci, Fac Agr, Izmir, Turkey; [Guneri, O. I.] Univ Mugla Sitki Kocman, Dept Stat, Fac Sci, Mugla, Turkey; [Yesilova, A.] Yuzuncu Yil Univ, Dept Anim Sci, Fac Agr, Van, Turkey en_US
dc.description Gevrekci, Yakut/0000-0002-4915-2238; Isci Guneri, Oznur/0000-0003-3677-7121 en_US
dc.description.abstract Background: The objective of this study is comparing different count data models for stillbirth data. In modeling this type of data, Poisson regression or alternative models can be preferred. Methods: The poisson, negative binomial, zero-inflated poisson, zero-inflated negative binomial, poisson-logit hurdle and negative binomial-logit hurdle regressions were compared and used to examine the effects of the gender, parity and herd-year-season independent variables on stillbirth. Furthermore, the Log-Likelihood statistics, Akaike Information Criteria, Bayesian Information Criteria and rootogram graphs were used as comparison criteria for performance of the models. According to these criteria, Negative Binomial-Logit Hurdle Regression model was chosen as the best model. Result: The parameter estimates obtained by Negative Binomial-Logit Hurdle Regression model in relation to the effects of the gender, parity and herd-year-season independent variables on stillbirth were found to be significant (p<0.01). It was found that while stillbirth incidence was higher in males than females, it was found to decrease as the parity increased. As a result, the Negative Binomial Logit Hurdle model was found the best model for stillbirth count data with overdispersion. en_US
dc.description.sponsorship TUBITAK (The Scientific and Technological Research Council of Turkey); Ege University Research Institute en_US
dc.description.sponsorship The authors wish to thank Dr. Daniel Gianola, Dr. Kent Weigel and US National Association of Animal Breeders for providing data. TUBITAK (The Scientific and Technological Research Council of Turkey) and Ege University Research Institute are gratefully acknowledged for financial support. en_US
dc.description.woscitationindex Science Citation Index Expanded
dc.identifier.doi 10.18805/IJAR.BF-1415
dc.identifier.endpage 1163 en_US
dc.identifier.issn 0367-6722
dc.identifier.issue 9 en_US
dc.identifier.scopus 2-s2.0-85139308433
dc.identifier.scopusquality Q4
dc.identifier.startpage 1158 en_US
dc.identifier.uri https://doi.org/10.18805/IJAR.BF-1415
dc.identifier.uri https://hdl.handle.net/20.500.14720/7888
dc.identifier.volume 56 en_US
dc.identifier.wos WOS:000901201600017
dc.identifier.wosquality Q4
dc.language.iso en en_US
dc.publisher Agricultural Research Communication Centre en_US
dc.relation.publicationcategory Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı en_US
dc.rights info:eu-repo/semantics/openAccess en_US
dc.subject Count Models en_US
dc.subject Holstein en_US
dc.subject Overdispersion en_US
dc.subject Stillbirth en_US
dc.subject Zero Inflation en_US
dc.title Comparison of Different Count Models for Investigation of Some Environmental Factors Affecting Stillbirth in Holsteins en_US
dc.type Article en_US

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