Twin studies in medicine--what do they tell us?

  • Corinna Hawkes
  • Published 1997 in
    QJM : monthly journal of the Association of…


A well-conducted twin study has the potential to evaluate the relative contribution of genetic and environmental factors to a given disease. Many studies are inconclusive because of problems with methodology. This article reviews the principles underlying the classical twin study and then discusses potential pitfalls. Twin studies in three diseases are… (More)


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