Results 41 to 50 of about 79,305 (292)

The effect of rare variants on inflation of the test statistics in case-control analyses.

open access: yes, 2015
BACKGROUND: The detection of bias due to cryptic population structure is an important step in the evaluation of findings of genetic association studies. The standard method of measuring this bias in a genetic association study is to compare the observed ...
Jonathan Tyrer   +4 more
core   +1 more source

Subclinical Optic Nerve Involvement in Radiologically Isolated Syndrome: Multimodal Detection and Diagnostic Impact

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives We aimed to determine the frequency of subclinical optic nerve (ON) lesions using MRI, optical coherence tomography (OCT), and visual evoked potentials (VEP) in radiologically isolated syndrome (RIS), and to assess their diagnostic and prognostic significance.
Christine Lebrun‐Frenay   +13 more
wiley   +1 more source

Further Comment on "'Lake Woebegone,' Twenty Years Later"

open access: yesNonpartisan Education Review, 2006
no ...
Richard P. Phelps
doaj  

Association Between Symptomatic Knee Osteoarthritis and Target Glycemic Control in Individuals With Type 2 Diabetes

open access: yesArthritis Care &Research, EarlyView.
Objective Knee osteoarthritis (OA) commonly affects individuals with type 2 diabetes (T2DM) and is associated with increased risk of diabetes‐related complications. To better understand potential mechanisms, we examined the association between symptomatic knee OA and glycemic control in individuals with T2DM.
Lauren K. King   +10 more
wiley   +1 more source

“Lake Woebegone,” Twenty Years Later

open access: yesNonpartisan Education Review, 2006
Twenty years ago, John Cannell developed data on test scores that became known as the “Lake Woebegone effect.” This commentary describes that experience.
John Jacob Cannell, M.D.
doaj  

Score Tests for Semiparametric Zero-inflated Poisson Models

open access: yesInternational Journal of Statistics and Probability, 2012
Count data sets often produce many zeros. It is sometimes potentially questionable to use a linear predictor to model the effect of a continuous covariate of interest in zero-inflated count data. To relax the restriction, Li (2011) proposed a semiparametric zero-inflated Poisson (ZIP) regression model by using fixed-knot cubic $basis$ splines or $B ...
openaire   +2 more sources

Differential Item Functioning on the Patient Health Questionnaire 8 by Disease Subtype, Language, Sex, and Age Among People With Systemic Sclerosis: A Scleroderma Patient‐Centered Intervention Network Cohort Study

open access: yesArthritis Care &Research, EarlyView.
Objective Somatic items used in depression assessments can potentially overlap with symptoms related to physical illness, including systemic sclerosis (SSc). No studies have looked at whether somatic depression items may be influenced by diffuse versus limited SSc disease subtypes, which are associated with varying degrees of symptom presentation.
Sophie Hu   +110 more
wiley   +1 more source

Minimal Important Change and Minimal Clinically Important Difference in Pain and Function With Exercise in Hip Osteoarthritis

open access: yesArthritis Care &Research, EarlyView.
Objective The objective of this study was to estimate the minimal important change (MIC) and minimal clinically important difference (MCID) for pain and physical function in individuals with hip osteoarthritis (OA) following a physiotherapist‐guided exercise intervention.
Yareni Guerrero   +8 more
wiley   +1 more source

Comments on "'Lake Woebegone,' Twenty Years Later"

open access: yesNonpartisan Education Review, 2006
J. J. Cannell’s article on the so-called “Lake Woebegone” effect for K-12 educational testing systems is mostly an historical account of technical issues and policy considerations that led in part to development of new types of test instruments for K-12 ...
D. J. McRae, Ph.D.
doaj  

Utility of inflation accounting data to investors [PDF]

open access: yes, 1992
The objective of financial reporting is to provide information about an entity which is useful to a wide range of users in making economic decisions. This study empirically investigates the utility of inflation accounting data to investors, by examining ...
Byrne, Marann
core  

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