Results 21 to 30 of about 15,347,884 (286)

Pooling overdispersed binomial data to estimate event rate

open access: yesBMC Medical Research Methodology, 2008
Background The beta-binomial model is one of the methods that can be used to validly combine event rates from overdispersed binomial data. Our objective is to provide a full description of this method and to update and broaden its applications in ...
Chan K Arnold, Young-Xu Yinong
doaj   +1 more source

Modeling microbial abundances and dysbiosis with beta-binomial regression

open access: yesThe Annals of Applied Statistics, 2020
Using a sample from a population to estimate the proportion of the population with a certain category label is a broadly important problem. In the context of microbiome studies, this problem arises when researchers wish to use a sample from a population of microbes to estimate the population proportion of a particular taxon, known as the taxon's ...
Martin, Bryan D.   +2 more
openaire   +5 more sources

Modelling overdispersion with the normalized tempered stable distribution [PDF]

open access: yes, 2010
This paper discusses a multivariate distribution which generalizes the Dirichlet distribution and demonstrates its usefulness for modelling overdispersion in count data.
Griffin, Jim E.   +6 more
core   +1 more source

A Bayesian Approach for Estimating Twin Similarity with Respect to a Binary Trait Under the Beta-Binomial Model [PDF]

open access: yesThe Egyptian Statistical Journal, 2011
In twin studies there is a need to compare a sample of monozygotic to another independent sample of dizygotic twins with respect to the presence or absence of a specific disease or condition.
Marwa Ahmed, Mohamed Shoukri
doaj   +1 more source

Performance of the Beta-Binomial Model for Clustered Binary Responses: Comparison with Generalized Estimating Equations [PDF]

open access: yes, 2021
This study examined performance of the beta-binomial model in comparison with GEE using clustered binary responses resulting in non-normal outcomes. Monte Carlo simulations were performed under varying intracluster correlations and sample sizes.
Im, Seongah, Seongah Im
core   +1 more source

Models for Underreporting: A Bernoulli Sampling Approach for Reported Counts

open access: yesAustrian Journal of Statistics, 2016
Underreporting in register systems can be analyzed using a binomial approach, where both the size and the probability parameter have to be estimated. Parameter estimation fails when overdispersion is present.
Gerhard Neubauer   +2 more
doaj   +1 more source

Exact Posterior distribution of risk ratio in the Kumaraswamy–Binomial model

open access: yesComptes Rendus. Mathématique, 2023
In categorical data analysis, the $2\times 2$ contingency tables are commonly used to assess the association between groups and responses, this is achieved by using some measures of association, such as the contingency coefficient, odds ratio, risk ...
Andrade, Jose A. A., Rathie, Pushpa
doaj   +1 more source

Using beta binomials to estimate classification uncertainty for ensemble models [PDF]

open access: yesJournal of Cheminformatics, 2014
Quantitative structure-activity (QSAR) models have enormous potential for reducing drug discovery and development costs as well as the need for animal testing. Great strides have been made in estimating their overall reliability, but to fully realize that potential, researchers and regulators need to know how confident they can be in individual ...
Robert D. Clark   +5 more
openaire   +3 more sources

PERBANDINGAN MODEL REGRESI LOGISTIK DAN MODEL REGRESI BETA BINOMIAL DALAM KASUS KREDIT MACET [PDF]

open access: yes, 2018
Regresi logistik adalah salah satu metode statistik yang menjelaskan  hubungan variabel tak bebas yang bersifat dikotomi dengan variabel bebas yang bersifat data kuantitatif dan kualitatif.
Newita, Tria Dewi, Martha, Shantika
core   +1 more source

Model to improve specificity for identification of clinically-relevant expanded T cells in peripheral blood.

open access: yesPLoS ONE, 2019
Current methods to quantify T-cell clonal expansion only account for variance due to random sampling from a highly diverse repertoire space. We propose a beta-binomial model to incorporate time-dependent variance into the assessment of differentially ...
Julie Rytlewski   +6 more
doaj   +1 more source

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