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024 7 _ |a 10.1371/journal.pone.0130708
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037 _ _ |a DZNE-2020-04309
041 _ _ |a English
082 _ _ |a 610
100 1 _ |a Prokopenko, Dmitry
|b 0
245 _ _ |a Using Network Methodology to Infer Population Substructure.
260 _ _ |a San Francisco, California, US
|c 2015
|b PLOS
264 _ 1 |3 online
|2 Crossref
|b Public Library of Science (PLoS)
|c 2015-06-22
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336 7 _ |a ARTICLE
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336 7 _ |a Journal Article
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520 _ _ |a One of the main caveats of association studies is the possible affection by bias due to population stratification. Existing methods rely on model-based approaches like structure and ADMIXTURE or on principal component analysis like EIGENSTRAT. Here we provide a novel visualization technique and describe the problem of population substructure from a graph-theoretical point of view. We group the sequenced individuals into triads, which depict the relational structure, on the basis of a predefined pairwise similarity measure. We then merge the triads into a network and apply community detection algorithms in order to identify homogeneous subgroups or communities, which can further be incorporated as covariates into logistic regression. We apply our method to populations from different continents in the 1000 Genomes Project and evaluate the type 1 error based on the empirical p-values. The application to 1000 Genomes data suggests that the network approach provides a very fine resolution of the underlying ancestral population structure. Besides we show in simulations, that in the presence of discrete population structures, our developed approach maintains the type 1 error more precisely than existing approaches.
536 _ _ |a 345 - Population Studies and Genetics (POF3-345)
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542 _ _ |i 2015-06-22
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|u http://creativecommons.org/licenses/by/4.0/
588 _ _ |a Dataset connected to CrossRef, PubMed,
650 _ 2 |a Algorithms
|2 MeSH
650 _ 2 |a Humans
|2 MeSH
650 _ 2 |a Models, Genetic
|2 MeSH
650 _ 2 |a Polymorphism, Single Nucleotide
|2 MeSH
650 _ 2 |a Population: genetics
|2 MeSH
700 1 _ |a Hecker, Julian
|b 1
700 1 _ |a Silverman, Edwin
|b 2
700 1 _ |a Nöthen, Markus M
|0 P:(DE-HGF)0
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700 1 _ |a Schmid, Matthias
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700 1 _ |a Lange, Christoph
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700 1 _ |a Loehlein Fier, Heide
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773 1 8 |a 10.1371/journal.pone.0130708
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|v 10
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773 _ _ |a 10.1371/journal.pone.0130708
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856 4 _ |u https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0130708
856 7 _ |2 Pubmed Central
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910 1 _ |a Deutsches Zentrum für Neurodegenerative Erkrankungen
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LibraryCollectionCLSMajorCLSMinorLanguageAuthor
Marc 21