Results 31 to 40 of about 8,095,618 (291)

Zero-inflated Probability Models and Their Applications to the Analysis of Test Scores

Kodo Keiryogaku (The Japanese Journal of Behaviormetrics), 2009
Statistical analysis of the number of correct answers of a test consisting of n items will be considered in this article. A beta-binomial distribution is assumed to the model of the distribution of test scores in this article. For such test scores, the situation of extra zeros sometimes arises in practical applications.
IWASAKI, Manabu, DAIDOJI, Kasumi
openaire   +2 more sources

Zero-inflated quantile rank-score based test (ZIQRank) with application to scRNA-seq differential gene expression analysis

The Annals of Applied Statistics, 2021
Differential gene expression analysis based on scRNA-seq data is challenging due to two unique characteristics of scRNA-seq data. First, multimodality and other heterogeneity of the gene expression among different cell conditions lead to divergences in the tail events or crossings of the expression distributions. Second, scRNA-seq data generally have a
Ling, Wodan, Zhang, Wenfei, Cheng, Bin, Wei, Ying   +3 more
openaire   +4 more sources

Acute Kidney Injury After Mechanical Thrombectomy for Stroke in Patients With Pre‐Existing Renal Impairment

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Acute kidney injury (AKI) is a common but often underrecognized complication in ischemic stroke patients undergoing mechanical thrombectomy, particularly among those with pre‐existing renal impairment. This study evaluated the incidence, risk factors, and clinical impact of AKI in this high‐risk population.
Michał Borończyk, Marcel Pilarek, Emilia Jaworska, Natalia Kardas, Oliwia Barnaś, Julia Woźniak, Iga Machała, Julia Węgrzynek‐Gallina, Joanna Siuda, Anna Hawrot‐Kawecka, Anetta Lasek‐Bal   +10 more
wiley   +1 more source

The Source of Lake Wobegon (slide show)

Nonpartisan Education Review, 2007
John J. Cannell's late 1980's "Lake Wobegon" reports suggested widespread deliberate educator manipulation of norm-referenced standardized test (NRT) administrations and results, resulting in artificial test score gains.
Richard P. Phelps
doaj  

Improvement in national test reading scores at Key Stage 1; grade inflation or better achievement? [PDF]

British Educational Research Journal, 2007
The aim of the UK National Literacy Strategy is to raise standards in literacy. Strong evidence for its success has, however, been lacking: most of the available data comes from performance on tests administered in schools or from Office for Standards in Education reports and is vulnerable to suggestions of bias.
Meadows, SAC, Herrick, DRM, Feiler, AC, the ALSPAC Study, Team   +3 more
openaire   +3 more sources

Comprehensive Assessment of Arterial, Tissue, and Venous Collaterals for Evaluating the Infarct Growth Rate: The Multimodal Collateral Score

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Collaterals are crucial factors that influence the infarct growth rate (IGR). We aimed to determine whether a comprehensive multimodal collateral score (MCS), incorporating collateral assessment at the arterial, tissue, and venous levels, is associated with functional independence and provides incremental prognostic value over ...
Giorgio Busto, Umberto Pensato, Ilaria Casetta, Giorgio U. Marcello, Angelo Barra, Anna Poggesi, Edoardo Carlesi, Sara Mancini, Andrea Ginestroni, Vittorio Miele, Alessandro Padovani, Andrea Morotti, Enrico Fainardi   +12 more
wiley   +1 more source

The Source of Lake Wobegon [updated]

Nonpartisan Education Review, 2010
John J. Cannell's late 1980's "Lake Wobegon" reports suggested widespread deliberateeducator manipulation of norm-referenced standardized test (NRT) administrations and results,resulting in artificial test score gains.
Richard P. Phelps
doaj  

Note on the radical inflation in the estimates of error variance in measurement models

Frontiers in Education
This note discusses the radical technical inflation in error variance and the related standard error of test scores from both conceptual and empirical viewpoints. This technical inflation arises as a direct consequence of the technical underestimation of
Jari Metsämuuronen, Jari Metsämuuronen
doaj   +1 more source

A Two‐Stage Questionnaire and Actigraphy Screening for iRBD in a Multicenter Retrospective Cohort

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Isolated rapid‐eye‐movement sleep behavior disorder is a prodromal marker of synucleinopathies. However, most cases remain undiagnosed due to the insufficient predictive value of questionnaires and limited access to confirmatory video‐polysomnography. We assessed a two‐stage screening strategy combining a brief questionnaire on rapid‐
Caleb A. Massimi, Giorgio Ricciardiello Mejia, Andre Metzger, Kang Hyun Ryu, Salonee Marwaha, Eva Grzegorczyk, Li Zhou, Eliana Jacobs, Boris Gilyadov, Claudia Kunney, Liqhwa Ncube, Ankit Parekh, Emmanuel Mignot, Fanny M. Elahi, Joseph Winer, Kathleen Poston, Andreas Brink‐Kjaer, Emmanuel H. During   +17 more
wiley   +1 more source

A Score Test for Testing a Marginalized Zero-Inflated Poisson Regression Model Against a Marginalized Zero-Inflated Negative Binomial Regression Model

Journal of Agricultural, Biological and Environmental Statistics, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gul Inan, John Preisser, Kalyan Das
openaire   +2 more sources