Family history of disease is often used as a surrogate marker of genetic susceptibility. For a common disease with a late and variable age at onset, what two factors play a significant role in your interpretation of a case-control study of family history?

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The Answer of Family history of disease is often used as a surrogate marker of genetic susceptibility. For a common disease with a late and variable age at onset, what two factors play a significant role in your interpretation of a case-control study of family history?

Family History of Disease Is Often Used as a Surrogate