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Multivariate Logit Analysis of Concordance Ratios for Qualitative Traits in Twin Studies

Published online by Cambridge University Press:  01 August 2014

Jaakko Kaprio ,
Seppo Sarna  and
Markku Koskenvuo
Jaakko Kaprio*
Affiliation:
Department of Public Health Science, University of Helsinki
Seppo Sarna
Affiliation:
Department of Public Health Science, University of Helsinki
Markku Koskenvuo
Affiliation:
Department of Public Health Science, University of Helsinki
*
Department of Public Health Science, Haartmaninkatu 3, SF-00290 Helsinki 29, Finland

Abstract

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The application of multiway contingency table analysis to the multivariate analysis of concordance ratios in twin studies is developed. The approach is illustrated by data on smoking and alcohol use in Finland and Sweden. This approach can enable the assessment of the effect of other variables on the concordance ratio and thus allow estimates of genetic effects on the trait under study. Hypotheses on relationships between genetic effects and other variables can be tested. After hypothesis testing, model fitting of the best hypothesis can be carried out.

Keywords

Twin concordanceContingency tablesMultivariate analysisSmokingAlcohol
Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 30 , Issue 4 , October 1981 , pp. 267 - 274
Copyright
Copyright © The International Society for Twin Studies 1981

References

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