Results 31 to 40 of about 84,950 (309)

Parametric Bootstrap Mantel‐Haenszel Statistic for Aggregated Testlet Effects

open access: hybridJournal of Educational Measurement, EarlyView.
Abstract While testlets have proven useful for assessing complex skills, the stem shared by multiple items often induces correlations between responses, leading to violations of local independence (LI), which can result in biased parameter and ability estimates.
Youn Seon Lim
openalex   +2 more sources

Defective spermatogenesis: Martin et al. respond [PDF]

open access: yes, 2008
This is an Open Access article - Copyright @ National Institute of Environmental Health Science.BACKGROUND: Male reproductive tract abnormalities such as hypospadias and cryptorchidism, and testicular cancer have been proposed to comprise a common ...
Boobis, Alan R.   +5 more
core   +2 more sources

DIF in the Spanish Version of the Verbal Selective Reminding Test Using Samples From Hispanics in the United States, Mexicans, and Spaniards [PDF]

open access: yes, 2019
Aim: Before a test can be used in the target population, it is necessary to demonstrate that there is measurement equivalence. One way to do this is by studying differential item functioning (DIF).
Morales Ortiz, Manuel   +1 more
core   +1 more source

Uso dos métodos Mantel-Haenszel para a detecção do funcionamento diferencial dos itens e software relacionado Using Mantel-Haenszel methods for detecting differential item functioning

open access: yesPsicologia: Reflexão e Crítica, 2012
As estatísticas englobadas sob a denominação métodos Mantel-Haenszel (MH), por suas simplicidades, baixo custo computacional e bons resultados, são os métodos mais empregadas para detectar o funcionamento diferencial dos itens (DIF).
Ángel M. Fidalgo, João D. Scalon
doaj   +1 more source

Gavestinel does not improve outcome after acute intracerebral hemorrhage: an analysis from the GAIN International and GAIN Americas studies [PDF]

open access: yes, 2005
<p><b>Background and Purpose:</b> Glycine Antagonist in Neuroprotection (GAIN) International and GAIN Americas trials were prospectively designed, randomized, placebo-controlled trials of gavestinel, a glycine-site antagonist and ...
Brown, D.L.   +9 more
core   +1 more source

Thrombolysis is associated with consistent functional improvement across baseline stroke severity: a comparison of outcomes in patients from the Virtual International Stroke Trials Archive (VISTA) [PDF]

open access: yes, 2010
<p><b>Background and Purpose:</b> Baseline stroke severity predicts outcomes among thrombolysed patients. The baseline National Institutes of Health Stroke Scale (NIHSS) thresholds are sometimes used to select patients for thrombolysis,
Grotta, J.C.   +3 more
core   +1 more source

A genome-wide association study demonstrates significant genetic variation for fracture risk in Thoroughbred racehorses [PDF]

open access: yes, 2014
Background: Thoroughbred racehorses are subject to non-traumatic distal limb bone fractures that occur during racing and exercise. Susceptibility to fracture may be due to underlying disturbances in bone metabolism which have a genetic cause.
Blott, Sarah C.   +8 more
core   +9 more sources

Investigating the Impact of Missing Data Handling Methods on the Detection of Differential Item Functioning

open access: yesInternational Journal of Assessment Tools in Education, 2018
In this study, it is aimed to investigate theimpact of different missing data handling methods on the detection ofDifferential Item Functioning methods (Mantel Haenszel and Standardizationmethods based on Classical Test Theory and Likelihood Ratio Test ...
Hüseyin Selvi, Devrim Özdemir Alıcı
doaj   +1 more source

Death or survival from invasive pneumococcal disease in Scotland: associations with serogroups and multilocus sequence types [PDF]

open access: yes, 2011
We describe associations between death from invasive pneumococcal disease (IPD) and particular serogroups and sequence types (STs) determined by multilocus sequence typing (MLST) using data from Scotland.
Andrew Smith   +24 more
core   +3 more sources

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