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Charith Bhagya Karunarathna edited untitled.tex
almost 8 years ago
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\end{itemize}
\item Logistic regression model of disease status.
\begin{itemize}
\item Assign disease status to the 1500 individuals based on randomly sampled
disease causing risk SNVs from the mid region (950kbp - 1050kbp) and a diploid model of disease risk.
\item For
disease causing risk SNVs, the number of copies of the derived allele increases disease risk according to a logistic regression model,
$$
{logit}\{P(D=1|G)\} = {logit}(0.2)+ \sum_{j=1}^{m} 2 \times G_j,\;\;\mbox{where,}
$$
\item $D$ is disease status ($D = 1$, case; $D=0$, control).
\item $G=(G_1, G_2, \ldots , G_{m})$ is an individual's multi-locus genotype at
$m (=13)$ disease causing $m$ risk SNVs, with $G_j$ being the number of copies of the derived allele at the $j^{th}$
disease causing risk SNV.
\item We obtain $13$
disease causing risk SNVs by adding randomly sampled SNVs from the mid-region one-at-a-time, until the prevalence is between $9.5-10.5\%$ in the $1500$ individuals.
\end{itemize}
\end{itemize}