Parametric Bootstrap Mantel‐Haenszel Statistic for Aggregated Testlet Effects
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
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Defective spermatogenesis: Martin et al. respond [PDF]
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
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DIF in the Spanish Version of the Verbal Selective Reminding Test Using Samples From Hispanics in the United States, Mexicans, and Spaniards [PDF]
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
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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]
<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
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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]
<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]
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
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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]
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