國家衛生研究院 NHRI:Item 3990099045/8283
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/8283


    Title: SeqSIMLA2: Simulating correlated quantitative traits accounting for shared environmental effects in user-specified pedigree structure
    Authors: Chung, RH;Tsai, WY;Hsieh, CH;Hung, KY;Hsiung, CA;Hauser, ER
    Contributors: Division of Biostatistics and Bioinformatics
    Abstract: Simulation tools that simulate sequence data in unrelated cases and controls or in families with quantitative traits or disease status are important for genetic studies. The simulation tools can be used to evaluate the statistical power for detecting the causal variants when planning a genetic epidemiology study, or to evaluate the statistical properties for new methods. We previously developed SeqSIMLA version 1 (SeqSIMLA1), which simulates family or case-control data with a disease or quantitative trait model. SeqSIMLA1, and several other tools that simulate quantitative traits, do not specifically model the shared environmental effects among relatives on a trait. However, shared environmental effects are commonly observed for some traits in families, such as body mass index. SeqSIMLA1 simulates a fixed three-generation family structure. However, it would be ideal to simulate prespecified pedigree structures for studies involving large pedigrees. Thus, we extended SeqSIMLA1 to create SeqSIMLA2, which can simulate correlated traits and considers the shared environmental effects. SeqSIMLA2 can also simulate prespecified large pedigree structures. There are no restrictions on the number of individuals that can be simulated in a pedigree. We used a blood pressure example to demonstrate that SeqSIMLA2 can simulate realistic correlation structures between the systolic and diastolic blood pressure among relatives. We also showed that SeqSIMLA2 can simulate large pedigrees with large chromosomal regions in a reasonable time frame.
    Date: 2015-01
    Relation: Genetic Epidemiology. 2015 Jan;39(1):20-24.
    Link to: http://dx.doi.org/10.1002/gepi.21850
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0741-0395&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000346469900004
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84923167066
    Appears in Collections:[Ren-Hua Chung] Periodical Articles
    [Chao A. Hsiung] Periodical Articles

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