نتایج جستجو برای: bivariate negative binomial regression model

تعداد نتایج: 2777173  

2009
Ka Lok Lee David R. Bell

The relationship between conditions in the local environment and individual-level behavior is of general interest to many fields of research. Unfortunately, researchers often encounter situations where individuals’ locations are reported at the region-level, and modeling individual-level outcomes as a function of region-level data introduces the potential for biased estimates. We show analytica...

2012
Naushad Mamode Khan

Breastfeeding is an important concept in the maternal life of a woman. In this paper, we focus on exclusive breastfeeding. Exclusive breastfeeding is the feeding of a baby on no other milk apart from breast milk. This type of breastfeeding is very important during the first six months because it supports optimal growth and development during infancy and reduces the risk of obliterating diseases...

Journal: :The international journal of biostatistics 2010
Anandamayee Majumdar Corinna Gries

Lately, bivariate zero-inflated (BZI) regression models have been used in many instances in the medical sciences to model excess zeros. Examples include the BZI Poisson (BZIP), BZI negative binomial (BZINB) models, etc. Such formulations vary in the basic modeling aspect and use the EM algorithm (Dempster, Laird and Rubin, 1977) for parameter estimation. A different modeling formulation in the ...

Journal: :Accident Analysis & Prevention 2021

Intersections are established dangerous entities of a highway system due to the challenging and unsafe roadway environment they characterized for drivers other road users. In efforts improve safety, an enormous interest has been shown in developing statistical models intersection crash prediction explanation. The selection adequate form model is great importance accurate estimation frequency co...

2016
Rosa González Silos Özge Karadag Barbara Peil Christine Fischer Maria Kabisch Carine Legrand Justo Lorenzo Bermejo

The relationship between genetic variability and individual phenotypes is usually investigated by testing for association relying on called genotypes. Allele counts obtained from next-generation sequence data could be used for this purpose too. Genetic association can be examined by treating alternative allele counts (AACs) as the response variable in negative binomial regression. AACs from seq...

رودباری, مسعود, صالحی, مسعود,

Background: Investigation through the number of failed courses and semesters in medical students is a method for assessing students’ performance. Since these amounts have a zero inflated (ZI) value in most students, use of Poisson and negative binomial distributions with ZI, in which can model count data to find the associated factors and estimate the parameters, is recommended.Methods: This cr...

2009
Xanthi Pedeli Dimitris Karlis

The study of time series models for count data has become a topic of special interest during the last years. However, while research on univariate time series for counts now flourish, the literature on multivariate time series models for count data is notably more limited. In the present paper, a bivariate integer-valued autoregressive process of order 1 (BINAR(1)) is introduced. Emphasis is pl...

Journal: :The European respiratory journal 2008
O N Keene P M A Calverley P W Jones J Vestbo J A Anderson

Various statistical methods have been used to measure the impact of treatment on chronic obstructive pulmonary disease (COPD) exacerbations. Poisson regression has recently been recommended as the appropriate method but the model does not satisfactorily account for variability between patients. In contrast, use of a negative binomial model, which corresponds to assuming a separate Poisson param...

2014
Jonathan W. Caudill Chad R. Trulson James W. Marquart Ryan Patten Matthew O. Thomas Sally Anderson

Available online xxxx Purpose: This study explored the effects of prison depopulation on local jail violence through a general systems perspective – where an abrupt shift in the processing of offenders had the potential to create ripple effects through other organizations – of the criminal justice system. Methods: In 2011, California passed the Criminal Justice Realignment legislation aimed to ...

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