About: Analysis of brood sex ratios: implications of offspring clustering.

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Generalized linear models (GLMs) are increasingly used in modern statistical analyses of sex ratio variation because they are able to determine variable design effects on binary response data. However, in applying GLMs, authors frequently neglect the hierarchical structure of sex ratio data, thereby increasing the likelihood of committing 'type I' error. Here, we argue that whenever clustered (e.g., brood) sex ratios represent the desired level of statistical inference, the clustered data structure ought to be taken into account to avoid invalid conclusions. Neglecting the between-cluster variation and the finite number of clusters in determining test statistics, as implied by using likelihood ratio-based chi (2)-statistics in conventional GLM, results in biased (usually overestimated) test statistics and pseudoreplication of the sample. Random variation in the sex ratio between clusters (broods) can often be accommodated by scaling residual binomial (error) variance for overdispersion, and using F-te Generalized linear models (GLMs) are increasingly used in modern statistical analyses of sex ratio variation because they are able to determine variable design effects on binary response data. However, in applying GLMs, authors frequently neglect the hierarchical structure of sex ratio data, thereby increasing the likelihood of committing 'type I' error. Here, we argue that whenever clustered (e.g., brood) sex ratios represent the desired level of statistical inference, the clustered data structure ought to be taken into account to avoid invalid conclusions. Neglecting the between-cluster variation and the finite number of clusters in determining test statistics, as implied by using likelihood ratio-based chi (2)-statistics in conventional GLM, results in biased (usually overestimated) test statistics and pseudoreplication of the sample. Random variation in the sex ratio between clusters (broods) can often be accommodated by scaling residual binomial (error) variance for overdispersion, and using F-te (en)
Title	Analysis of brood sex ratios: implications of offspring clustering. Analysis of brood sex ratios: implications of offspring clustering. (en)
skos:prefLabel	Analysis of brood sex ratios: implications of offspring clustering. Analysis of brood sex ratios: implications of offspring clustering. (en)
skos:notation	RIV/68081766:_____/01:67010007!RIV/2003/AV0/A67003/N
http://linked.open.../vavai/riv/strany	293;301
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA524/01/1316), P(GA524/96/1095), Z(AV0Z6093917)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Tkadlec, Emil
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 biologie obratlovců AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	673075
http://linked.open...ai/riv/idVysledku	RIV/68081766:_____/01:67010007
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	generalized linear mixed models; random coefficients; multilevel analysis (en)
http://linked.open.../riv/klicoveSlovo	multilevel analysis generalized linear mixed models random coefficients
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[2F790E1CA211]
http://linked.open...i/riv/nazevZdroje	Behavioral Ecology and Sociobiology
http://linked.open...in/vavai/riv/obor	EG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Population dynamics of the common vole and a new practical method to forecast its abundance Precocious breeding: a new reproductive phenomen in voles?
http://linked.open...UplatneniVysledku	2001
http://linked.open...v/svazekPeriodika	N/A
http://linked.open...iv/tvurceVysledku	Tkadlec, Emil Krackow, S.
http://linked.open...n/vavai/riv/zamer	Diversity and life history of free-living vertebrates and implication of results in the strategy of conservation and sustainable management of natural resources
issn	0340-5443
number of pages	9 (xsd:int)

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