نتایج جستجو برای: mantel test

تعداد نتایج: 813318  

Journal: :Statistics in medicine 2006
Klervi Leuraud Jacques Benichou

For the problem of testing for a monotonic trend between an ordinal exposure and a binary response while controlling for categorical cofactors, we derived stratified and adjusted versions of two single contrast tests. Using simulations, we compared their statistical properties to those of the commonly used stratified Mantel-extension trend (MET) test. All tests had high power in case of monoton...

2013
Vaclav Fidler Nico Nagelkerke

Several statistical methods have been developed for adjusting the Odds Ratio of the relation between two dichotomous variables X and Y for some confounders Z. With the exception of the Mantel-Haenszel method, commonly used methods, notably binary logistic regression, are not symmetrical in X and Y. The classical Mantel-Haenszel method however only works for confounders with a limited number of ...

Amin Mirshamsi Kakhki Hasan Marashi, Mohammad Farsi Somayeh Heidary,

Seedless barberry (Berberis vulgaris L. var. asperma) is one of the few crops that is only cultivated in eastern parts of Iran. As a new crop there has not been any study to identify phylogenetic relationships of this plant with other related species existing in Iran. In this study, Amplification fragment length polymorphism (AFLP) markers based on four selected primer combinations (EcoRI/Tru1I...

Journal: :Journal of the American Mosquito Control Association 1999
J E Conn M G Rosa-Freitas S L Luz H Momen

Samples of the neotropical malaria vector Anopheles darlingi from Bolivia, Brazil, and Venezuela were analyzed to test for differences in mitochondrial haplotype frequencies. With the use of molecular variance components and F-statistics, significant genetic variability of An. darlingi was found apportioned primarily among populations within regions or within populations, with regions defined e...

Journal: :Genetics and molecular research : GMR 2010
D Braganholi M Bélo B W Bertoni A L Fachin R O Beleboni S M Zingaretti

Random amplified polymorphic DNA (RAPD) was used to detect polymorphisms among Zaprionus indianus fly populations collected from six municipalities in the States of São Paulo and Minas Gerais, Brazil. This species is an important, recently introduced fruit fly pest of figs and other fruit. Among 21 primers, 16 produced 73 reproducible polymorphic fragments; primer AM-9 produced the greatest num...

Journal: :Journal of Statistical Software 2002

2013
Samuel A. Cushman Tzeidle N. Wasserman Erin L. Landguth Andrew J. Shirk

The predominant analytical approach to associate landscape patterns with gene flow processes is based on the association of cost distances with genetic distances between individuals. Mantel and partial Mantel tests have been the dominant statistical tools used to correlate cost distances and genetic distances in landscape genetics. However, the inherent high correlation among alternative resist...

Journal: :Stroke 2009
Philip Teal Stephen Davis Werner Hacke Markku Kaste Patrick D Lyden Monika Fierus

BACKGROUND AND PURPOSE Repinotan hydrochloride is a serotonin (5-HT)(1A) receptor full agonist with evidence of neuroprotection in animal models of permanent and transient focal ischemia. The purpose of this Phase IIb study was to investigate the efficacy, safety, and tolerability of a targeted exposure to repinotan in patients with acute ischemic stroke. METHODS This was a double-blind, plac...

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