About: Reliability of Composite Dichotomous Measurements

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In this paper we examine a more general definition of reliability, which is based on decomposition of variance in mixed effects model. Proposed definition covers the classical definition of reliability and it is, moreover, appropriate for dichotomous measurements, too. Newly, for the proposed definition assumptions are derived, under which the reliability of composite measurement can be predicted by reliability of single measurement (Spearman-Brown formula) and approximate validity of Spearman-Brown formula is shown for the Rasch model. Finally, as a modification of the classical estimate of reliability based on Cronbach's alpha, we examine its counterpart logistic alpha, which appears to be more appropriate for composite dichotomous measurements in some cases. The new estimate is used in binary data of computerized process of myocardial perfusion diagnosis from cardiac single proton emission computed tomography (SPECT). In this paper we examine a more general definition of reliability, which is based on decomposition of variance in mixed effects model. Proposed definition covers the classical definition of reliability and it is, moreover, appropriate for dichotomous measurements, too. Newly, for the proposed definition assumptions are derived, under which the reliability of composite measurement can be predicted by reliability of single measurement (Spearman-Brown formula) and approximate validity of Spearman-Brown formula is shown for the Rasch model. Finally, as a modification of the classical estimate of reliability based on Cronbach's alpha, we examine its counterpart logistic alpha, which appears to be more appropriate for composite dichotomous measurements in some cases. The new estimate is used in binary data of computerized process of myocardial perfusion diagnosis from cardiac single proton emission computed tomography (SPECT). (en)
Title	Reliability of Composite Dichotomous Measurements Reliability of Composite Dichotomous Measurements (en)
skos:prefLabel	Reliability of Composite Dichotomous Measurements Reliability of Composite Dichotomous Measurements (en)
skos:notation	RIV/67985807:_____/10:00353038!RIV11-MSM-67985807
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1M06014), Z(AV0Z10300504)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Zvára, Karel Martinková, Patrícia
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav informatiky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	284709
http://linked.open...ai/riv/idVysledku	RIV/67985807:_____/10:00353038
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	reliability; binary data; logistic regression; Cronbach alpha; Rasch model; myocardial perfusion diagnosis (en)
http://linked.open.../riv/klicoveSlovo	Rasch model reliability binary data logistic regression Cronbach alpha myocardial perfusion diagnosis
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[EA6054639B35]
http://linked.open...i/riv/nazevZdroje	European Journal for Biomedical Informatics
http://linked.open...in/vavai/riv/obor	BB
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of Biomedical Informatics
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	6
http://linked.open...iv/tvurceVysledku	Zvára, Karel Martinková, Patrícia
http://linked.open...n/vavai/riv/zamer	Informatika pro informační společnost: modely, algoritmy, aplikace
issn	1801-5603
number of pages	7 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Reliability of Composite Dichotomous Measurements Reliability of Composite Dichotomous Measurements Reliability of Composite Dichotomous Measurements

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