Results 71 to 80 of about 550,309 (325)

Covariant Transform [PDF]

open access: yesJournal of Physics: Conference Series, 2011
9 pages, LaTeX2e (AMS-LaTeX); v2: minor ...
openaire   +2 more sources

Stage‐Dependent Inhibitory Connectivity in Striatal‐Motor Circuit in Huntington's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Elucidating dysfunctional connectivity patterns among key brain regions in Huntington's disease (HD) underlying progression may have implications for developing treatment and therapeutic evaluation. Objective Explore the relationship between abnormal spontaneous resting‐state activity and atrophy in HD‐specific brain regions and ...
Yinghua Jing   +4 more
wiley   +1 more source

Effect of neighborhood and plot size on experiments with multiple-harvest oleraceous crops

open access: yesPesquisa Agropecuária Brasileira, 2014
The objective of this work was to determine the efficiency of the Papadakis method on the quality evaluation of experiments with multiple-harvest oleraceous crops, and on the estimate of the covariate and the ideal plot size.
Daniel Santos   +5 more
doaj   +1 more source

Inference after covariate-adaptive randomisation: aspects of methodology and theory

open access: yesStatistical Theory and Related Fields, 2021
Covariate-adaptive randomisation has a more than 45 years of history of applications in clinical trials, in order to balance treatment assignments across prognostic factors that may have influence on the outcomes of interest.
Jun Shao
doaj   +1 more source

The MSA Atrophy Index (MSA‐AI): An Imaging Marker for Diagnosis and Clinical Progression in Multiple System Atrophy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Reliable biomarkers are essential for tracking disease progression and advancing treatments for multiple system atrophy (MSA). In this study, we propose the MSA Atrophy Index (MSA‐AI), a novel composite volumetric measure to distinguish MSA from related disorders and monitor disease progression. Methods Seventeen participants with an
Paula Trujillo   +11 more
wiley   +1 more source

The potential for bias in principal causal effect estimation when treatment received depends on a key covariate

open access: yes, 2011
Motivated by a potential-outcomes perspective, the idea of principal stratification has been widely recognized for its relevance in settings susceptible to posttreatment selection bias such as randomized clinical trials where treatment received can ...
Belin, Thomas R., Zigler, Corwin M.
core   +1 more source

Fixel‐Based Analysis of Diffusion Imaging as a Quantitative Marker of Disease State in Spinocerebellar Ataxia

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Spinocerebellar ataxias (SCAs) are a group of genetically heterogeneous neurodegenerative diseases causing progressive deterioration and reduced quality of life. Therapeutic advances have been limited by a lack of sensitive anatomic, functional, or diffusion imaging‐based biomarkers.
David J. Arpin   +11 more
wiley   +1 more source

Identifying key covariates of clinical outcomes for critically ill patients with Parkinson’s disease: analysis of the MIMIC-IV database

open access: yesFrontiers in Neurology
BackgroundParkinson’s disease (PD) is a common chronic degenerative disease, and its exact pathological mechanism remains unclear. In this study, we identified covariates associated with the clinical outcomes of PD using patient data from the Medical ...
LiHua Luo   +6 more
doaj   +1 more source

Exploring treatment by covariate interactions using subgroup analysis and meta-regression in cochrane reviews: a review of recent practice.

open access: yesPLoS ONE, 2015
BackgroundTreatment by covariate interactions can be explored in reviews using interaction analyses (e.g., subgroup analysis). Such analyses can provide information on how the covariate modifies the treatment effect and is an important methodological ...
Sarah Donegan   +4 more
doaj   +1 more source

Correlation Between Irisin and Cognitive Functions in Alzheimer Dementia

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The myokine irisin, a recent positive mediator of exercise in the brain, shows neuroprotective functions against Alzheimer's disease (AD). The association between irisin and cognition has never been explored in a biologically defined cohort of patients.
Patrizia Pignataro   +12 more
wiley   +1 more source

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