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| 題名: | Bayesian Analysis of the Population Case-Control Studies When the Population is in Hardy-Weinberg Equilibrium |
| 作者: | 陳錦華;Chen, Jin-hua |
| 貢獻者: | 淡江大學統計學系 |
| 日期: | 2005-02 |
| 上傳時間: | 2011-10-23 16:29:57 (UTC+8) |
| 摘要: | Association analysis of genetic polymorphisms has been mostly performed in a case-control setting with unrelated affected subjects compared with unrelated unaffected subjects. In this paper, we present a Bayesian method for analyzing such case-control data when the population is in Hardy-Weinberg equilibrium. Our Bayesian method depends on the informative prior which is the retrospective likelihood based on historical data, raised to a power a. By modeling the retrospective likelihood properly, different prior information about the studied population can be incorporated into the specification of the prior. The scalar a is a precision parameter quantifying the heterogeneity between current and historical data. A guide value for a is discussed in this paper. The informative prior and posterior distributions are proper under very general conditions. Therefore, our method can be applied in most case-control studies. Further, for assessing gene-environment interactions, our approach will naturally lead to a Bayesian model depending only on the case data, when genotype and environmental factors are independent in the population. Thus our approach can be applied to case-only studies. A real example is used to show the applications of our method. |
| 關聯: | Genetics Epidemiology 28(2), pp.183-193 |
| DOI: | 10.1002/gepi.20044 |
| 顯示於類別: | [統計學系暨研究所] 期刊論文
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