Results 31 to 40 of about 379,748 (264)

Local influence diagnostics in elliptical multilevel models [PDF]

Anais da Academia Brasileira de Ciências
Local influence diagnostics for elliptical multilevel models are proposed in this paper. This class of models involves the use of continuous symmetric distributions, including heavy-tailed error models, and the normal distribution as a particular case ...
ROBERTO F. MANGHI, ÉRICA V. NOGUEIRA, AUDREY HELEN M.A. CYSNEIROS   +2 more
doaj   +1 more source

REndo: Internal Instrumental Variables to Address Endogeneity

Journal of Statistical Software, 2023
Endogeneity is a common problem in any causal analysis. It arises when the independence assumption between an explanatory variable and the error in a statistical model is violated.
Raluca Gui, Markus Meierer, Patrik Schilter, René Algesheimer   +3 more
doaj   +1 more source

determinants of school performance in selected MENA countries

Revistamultidisciplinar.com
Based on data from the 2011 TIMSS international survey related to the 2nd year of secondary school of eleven MENA countries, this work aims to identify the characteristics of the educational system that influence the students' academic performance in ...
Mounia Bettah, Abdelilah Abbaia
doaj   +1 more source

A discussion of statistical methods to characterise early growth and its impact on bone mineral content later in childhood

Annals of Human Biology, 2019
Background: Many statistical methods are available to model longitudinal growth data and relate derived summary measures to later outcomes. Aim: To apply and compare commonly used methods to a realistic scenario including pre- and postnatal data, missing
Sarah R. Crozier, William Johnson, Tim J. Cole, Corrie Macdonald-Wallis, Graciela Muniz-Terrera, Hazel M. Inskip, Kate Tilling   +6 more
doaj   +1 more source

Respondent Mental Health, Mental Disorders and Survey Interview Outcomes

Survey Research Methods, 2018
Poor mental health and mental disorders are amongst the largest causes of disease burden across the globe, and in developed countries mental illness is on the rise.
Francisco Perales Perez, Bernard Baffour
doaj   +1 more source

Multilevel Coupled Model Transformations for Precise and Reusable Definition of Model Behaviour

, 2019
The use of Domain-Specific Languages (DSLs) is a promising field for the development of tools tailored to specific problem spaces, effectively diminishing the complexity of hand-made software.
Durán, Francisco, Macías, Fernando, Rodriguez-Echeverria, Roberto, Rutle, Adrian, Wolter, Uwe   +4 more
core   +1 more source

Paramagnetic Rim Lesions Are Associated With Trans‐Synaptic Degeneration of the Visual Pathway in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Retrograde trans‐synaptic degeneration (rTSD) from posterior visual pathway lesions in multiple sclerosis (MS) is characterized by hemi‐macular ganglion cell‐inner plexiform layer (GCIPL) thinning and contralateral visual field loss.
Abdul Jaber Tayem, Angel Liu, Sargis Manukyan, Mustafa Subhi, Elaina Luskin, Bryan Quah, Sreekanth Madhusoodhanan Nair, Arzu C. Has Silemek, Gabriela Zabala, Yujie Cui, Laura Locke, Paula Barreras, Marwa Kaisey, Vinicius Calsavara, Daniel S. Reich, Nancy L. Sicotte, Pascal Sati, Omar Al‐Louzi   +17 more
wiley   +1 more source

Hip Morphology–Based Osteoarthritis Risk Prediction Models: Development and External Validation Using Individual Participant Data From the World COACH Consortium

Arthritis Care &Research, EarlyView.
Objective This study aims to develop hip morphology‐based radiographic hip osteoarthritis (RHOA) risk prediction models and investigates the added predictive value of hip morphology measurements and the generalizability to different populations. Methods We combined data from nine prospective cohort studies participating in the Worldwide Collaboration ...
Myrthe A. van den Berg, Fleur Boel, Michiel M. A. van Buuren, Noortje S. Riedstra, Jinchi Tang, Harbeer Ahedi, Nigel K. Arden, Sita M. A. Bierma‐Zeinstra, Cindy G. Boer, Flavia M. Cicuttini, Timothy F. Cootes, David T. Felson, Willem Paul Gielis, Joshua Heerey, Graeme Jones, Stefan Kluzek, Nancy E. Lane, Claudia Lindner, Joyce B. J. van Meurs, Andrea Mosler, Amanda E. Nelson, Michael C. Nevitt, Edwin H. Oei, Jos Runhaar, Harrie Weinans, Jesse H. Krijthe, Rintje Agricola   +26 more
wiley   +1 more source

Multilevel IRT Modeling in Practice with the Package mlirt [PDF]

, 2007
Variance component models are generally accepted for the analysis of hierarchical structured data. A shortcoming is that outcome variables are still treated as measured without an error.
Fox, Jean-Paul
core   +4 more sources

Enabling Digital Continuity in Virtual Manufacturing for Eco‐Efficiency Assessment of Lightweight Structures by Means of a Domain‐Specific Structural Mechanics Language: Requirements, Idea and Proof of Concept

Advanced Engineering Materials, EarlyView.
This article presents a solver‐agnostic domain‐specific language (DSL) for computational structural mechanics that strengthens interoperability in virtual product development. Using a hierarchical data model, the DSL enables seamless exchange between diverse simulation tools and numerical methods.
Martin Rädel, Andreas Schuster, Felix Schoenitz, Jean Lefèvre   +3 more
wiley   +1 more source