Document Detail


Exact transmission-disequilibrium tests with multiallelic markers.
MedLine Citation:
PMID:  9271708     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The transmission-disequilibrium (TD) test is a powerful method for detecting linkage between marker and disease loci in the presence of linkage disequilibrium. For multiallelic markers, we propose the use of exact tests, which are implemented using both an exact algorithm and Markov chain Monte Carlo simulation. Simulation studies show that exact tests improve both the small sample validity and the power of the TD method. We also compared the usual single-affected-offspring sampling scheme to one in which pairs of affected siblings are sampled. Affected-sib-pair sampling greatly increases the power of the TD method and will be most useful when a sample of affected sib pairs is available from prior linkage studies.
Authors:
M A Cleves; J M Olson; K B Jacobs
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Genetic epidemiology     Volume:  14     ISSN:  0741-0395     ISO Abbreviation:  Genet. Epidemiol.     Publication Date:  1997  
Date Detail:
Created Date:  1997-09-30     Completed Date:  1997-09-30     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8411723     Medline TA:  Genet Epidemiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  337-47     Citation Subset:  IM    
Affiliation:
Department of Epidemiology and Biostatistics, Rammelkamp Center for Education and Research, Case Western Reserve University, Cleveland, Ohio, USA.
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MeSH Terms
Descriptor/Qualifier:
Algorithms
Alleles
Chi-Square Distribution
Gene Frequency*
Genetic Markers*
Genotype
Humans
Linkage Disequilibrium*
Markov Chains
Models, Genetic*
Models, Statistical*
Monte Carlo Method
Nuclear Family
Polymorphism, Genetic
Risk Assessment
Grant Support
ID/Acronym/Agency:
GM28356/GM/NIGMS NIH HHS; HL07567/HL/NHLBI NIH HHS; RR03655/RR/NCRR NIH HHS
Chemical
Reg. No./Substance:
0/Genetic Markers

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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