Results 11 to 20 of about 489,917 (280)

rptR: repeatability estimation and variance decomposition by generalized linear mixed‐effects models [PDF]

open access: yesMethods in Ecology and Evolution, 2017
Summary Intra‐class correlations (ICC) and repeatabilities (R) are fundamental statistics for quantifying the reproducibility of measurements and for understanding the structure of biological variation. Linear mixed effects models offer a versatile framework for estimating ICC and R.
Martin A. Stoffel   +2 more
openaire   +4 more sources

To transform or not to transform: Using Generalized Linear Mixed Models to analyse reaction time data

open access: yesFrontiers in Psychology, 2015
Linear mixed-effect models (LMMs) are being increasingly widely used in psychology to analyse multi-level research designs. This feature allows LMMs to address some of the problems identified by Speelman and McGann (2013) about the use of mean data ...
Steson eLo, Sally eAndrews
doaj   +3 more sources

(Generalized Linear) Mixed‐Effects Modeling: A Learner Corpus Example [PDF]

open access: yesLanguage Learning, 2021
AbstractThis methods showcase article provides a detailed overview of a mixed‐effects modeling analysis of corpus data on the use of that in object and subject complementation by native speakers of English compared to its use by German and Spanish learners of English.
Gries, Stefan Th.   +1 more
openaire   +2 more sources

Fixed or random? On the reliability of mixed‐effects models for a small number of levels in grouping variables

open access: yesEcology and Evolution, 2022
Biological data are often intrinsically hierarchical (e.g., species from different genera, plants within different mountain regions), which made mixed‐effects models a common analysis tool in ecology and evolution because they can account for the non ...
Johannes Oberpriller   +2 more
doaj   +1 more source

Misspecification in Generalized Linear Mixed Models and Its Impact on the Statistical Wald Test

open access: yesApplied Sciences, 2023
Generalized linear mixed models are commonly used in repeated measurement studies and account for the dependence between observations obtained from the same experimental unit.
Diana Arango-Botero   +2 more
doaj   +1 more source

Bayesian P-Splines to investigate the impact of covariates on Multiple Sclerosis clinical course [PDF]

open access: yes, 2003
This paper aims at proposing suitable statistical tools to address heterogeneity in repeated measures, within a Multiple Sclerosis (MS) longitudinal study.
Di Serio, C., Lamina, C.
core   +3 more sources

Spatial variability in floodplain sedimentation: the use of generalized linear mixed-effects models [PDF]

open access: yesHydrology and Earth System Sciences, 2010
Sediment, Total Organic Carbon (TOC) and total nitrogen (TN) accumulation during one overbank flood (1.15 y return interval) were examined at one reach of the Middle Ebro River (NE Spain) for elucidating spatial patterns. To achieve this goal, four areas
A. Cabezas   +4 more
doaj   +1 more source

varTestnlme: An R Package for Variance Components Testing in Linear and Nonlinear Mixed-Effects Models

open access: yesJournal of Statistical Software, 2023
The issue of variance components testing arises naturally when building mixed-effects models, to decide which effects should be modeled as fixed or random or to build parsimonious models.
Charlotte Baey, Estelle Kuhn
doaj   +1 more source

A vine copula mixed effect model for trivariate meta-analysis of diagnostic test accuracy studies accounting for disease prevalence [PDF]

open access: yes, 2015
A bivariate copula mixed model has been recently proposed to synthesize diagnostic test accuracy studies and it has been shown that it is superior to the standard generalized linear mixed model in this context.
Aas K   +41 more
core   +2 more sources

Modeling Multiple Item Context Effects With Generalized Linear Mixed Models

open access: yesFrontiers in Psychology, 2019
Item context effects refer to the impact of features of a test on an examinee's item responses. These effects cannot be explained by the abilities measured by the test. Investigations typically focus on only a single type of item context effects, such as
Norman Rose   +6 more
doaj   +1 more source

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