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中文摘要：
目的介绍在遗传流行病学病例对照研究中,应用多因子降维法（MDR）分析基因-基因交互作用。方法简述MDR的基本步骤、原理及其优缺点,并结合研究实例说明在病例对照研究中进行MDR分析。结果相对于传统的统计学方法 ,MDR是一种无参数、无遗传模式的分析交互作用的方法 ,理论和实例研究均表明其分析交互作用具有较好的效能,目前已成功应用于散发性乳腺癌、心房颤动和原发性高血压等疾病的研究。结论 MDR能够应用于病例对照研究进行基因-基因交互作用的分析,且具有较传统的统计学分析方法无法比拟的优势。
英文摘要：
Objective To introduce the application of Multifactor Dimensionality Reduction （MDR） method for detecting gene-gene interactions in genetic case-control studies.Methods A brief overview on basic steps involved in the implementation,theoretical details,as well as the use and features of the MDR method were discussed based on a practical research case.Results Advantages of MDR were compared to the conventional statistical approaches,showing that MDR method was a novel,nonparametric,genetic model-free approach that was developed specifically for detecting gene-gene interactions.Theoretical and empirical studies suggested that MDR was having reasonable power for detecting gene-gene interactions.Applications of MDR method had found the evidence of gene-gene interactions in several diseases such as sporadic breast cance,atrial fibrillation and essential hypertension.Conclusion MDR method could be used for detecting gene-gene interactions in genetic case-control studies as having great advantages versus the conventional statistical approaches.
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