Results 11 to 20 of about 604,873 (258)

Subset Selection for Linear Mixed Models [PDF]

open access: yesBiometrics, 2022
AbstractLinear mixed models (LMMs) are instrumental for regression analysis with structured dependence, such as grouped, clustered, or multilevel data. However, selection among the covariates—while accounting for this structured dependence—remains a challenge. We introduce a Bayesian decision analysis for subset selection with LMMs. Using a Mahalanobis
Kowal DR.
openaire   +4 more sources

Federated generalized linear mixed models for collaborative genome-wide association studies [PDF]

open access: yesiScience, 2023
Summary: Federated association testing is a powerful approach to conduct large-scale association studies where sites share intermediate statistics through a central server. There are, however, several standing challenges.
Wentao Li   +3 more
doaj   +2 more sources

Neighborhood-level heterogeneity in childhood morbidity through generalized linear mixed models [PDF]

open access: yesFrontiers in Public Health
ObjectiveChildhood morbidities are crucial for improving long-term public health outcomes. This study aimed to examine the existence of child-specific and regional variation in childhood morbidity based on the cross-cutting study of the Performance ...
Endeshaw A. Derso   +8 more
doaj   +2 more sources

Network analysis of longitudinal electronic health records using linear mixed models [PDF]

open access: yesBioData Mining
Background The accelerating development of healthcare data stored in electronic health records (EHRs) has created novel opportunities for biomedical research.
Marina Vargas-Fernández   +3 more
doaj   +2 more sources

Generalized linear mixed models can detect unimodal species-environment relationships [PDF]

open access: yesPeerJ, 2013
Niche theory predicts that species occurrence and abundance show non-linear, unimodal relationships with respect to environmental gradients. Unimodal models, such as the Gaussian (logistic) model, are however more difficult to fit to data than linear ...
Tahira Jamil, Cajo J.F. ter Braak
doaj   +2 more sources

Bayesian Linear Mixed Models with Polygenic Effects

open access: yesJournal of Statistical Software, 2018
We considered Bayesian estimation of polygenic effects, in particular heritability in relation to a class of linear mixed models implemented in R (R Core Team 2018).
Jing Hua Zhao   +2 more
doaj   +1 more source

Fitting Linear Mixed-Effects Models Using lme4

open access: yesJournal of Statistical Software, 2015
Maximum likelihood or restricted maximum likelihood (REML) estimates of the parameters in linear mixed-effects models can be determined using the lmer function in the lme4 package for R. As for most model-fitting functions in R, the model is described in
Douglas Bates   +3 more
doaj   +1 more source

Linear Mixed Models: Gum and Beyond

open access: yesMeasurement Science Review, 2014
In Annex H.5, the Guide to the Evaluation of Uncertainty in Measurement (GUM) [1] recognizes the necessity to analyze certain types of experiments by applying random effects ANOVA models.
Arendacká Barbora   +4 more
doaj   +1 more source

Model Selection in Linear Mixed Models

open access: yesStatistical Science, 2013
Linear mixed effects models are highly flexible in handling a broad range of data types and are therefore widely used in applications. A key part in the analysis of data is model selection, which often aims to choose a parsimonious model with other desirable properties from a possibly very large set of candidate statistical models.
Müller, Samuel   +2 more
openaire   +4 more sources

Bayesian Inference for Spatial Beta Generalized Linear Mixed Models [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2018
In some applications, the response variable assumes values in the unit interval. The standard linear regression model is not appropriate for modelling this type of data because the normality assumption is not met. Alternatively, the beta regression model
L. Kalhori Nadrabadi, M. Mohhamadzadeh
doaj   +1 more source

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