Results 11 to 20 of about 3,153,646 (349)

Odds ratios from logistic, geometric, Poisson, and negative binomial regression models [PDF]

open access: yesBMC Medical Research Methodology, 2018
Background The odds ratio (OR) is used as an important metric of comparison of two or more groups in many biomedical applications when the data measure the presence or absence of an event or represent the frequency of its occurrence.
Christopher J. Sroka   +1 more
doaj   +3 more sources

Modeling microbial abundances and dysbiosis with beta-binomial regression [PDF]

open access: yesAnnals 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 ...
Bryan D Martin   +2 more
exaly   +4 more sources

Too many zeros and/or highly skewed? A tutorial on modelling health behaviour as count data with Poisson and negative binomial regression [PDF]

open access: yesHealth Psychology and Behavioral Medicine, 2021
Background Dependent variables in health psychology are often counts, for example, of a behaviour or number of engagements with an intervention. These counts can be very strongly skewed, and/or contain large numbers of zeros as well as extreme outliers ...
James A Green
exaly   +3 more sources

Normalization and variance stabilization of single-cell RNA-seq data using regularized negative binomial regression [PDF]

open access: yesGenome Biology, 2019
Single-cell RNA-seq (scRNA-seq) data exhibits significant cell-to-cell variation due to technical factors, including the number of molecules detected in each cell, which can confound biological heterogeneity with technical effects.
Christoph Hafemeister, Rahul Satija
exaly   +3 more sources

Delta Boosting Implementation of Negative Binomial Regression in Actuarial Pricing

open access: yesRisks, 2020
This study proposes an efficacious approach to analyze the over-dispersed insurance frequency data as it is imperative for the insurers to have decisive informative insights for precisely underwriting and pricing insurance products, retaining existing ...
Simon CK Lee
doaj   +2 more sources

New two parameter hybrid estimator for zero inflated negative binomial regression models [PDF]

open access: yesScientific Reports
The zero-inflated negative binomial regression (ZINBR) model is used for modeling count data that exhibit both overdispersion and zero-inflated counts. However, a persistent challenge in the efficient estimation of parameters within ZINBR models is the ...
Fatimah A. Almulhim   +5 more
doaj   +2 more sources

Beta-binomial regression and bimodal utilization. [PDF]

open access: yesHealth Serv Res, 2013
ObjectiveTo illustrate how the analysis of bimodal U‐shaped distributed utilization can be modeled with beta‐binomial regression, which is rarely used in health services research.Data Sources/Study SettingVeterans Affairs (VA) administrative data and Medicare claims in 2001–2004 for 11,123 Medicare‐eligible VA primary care users in 2000.Study DesignWe ...
Liu CF   +3 more
europepmc   +4 more sources

Marginal modeling in community randomized trials with rare events: Utilization of the negative binomial regression model. [PDF]

open access: yesClin Trials, 2022
Background/aims This work is motivated by the HEALing Communities Study, which is a post-test only cluster randomized trial in which communities are randomized to two different trial arms.
Westgate PM   +5 more
europepmc   +2 more sources

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