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研究生: 高駿逸
Gao, Jun-Yi
論文名稱: 兩階段多元結果依賴採樣設計的最佳配置
Optimal Two-Stage Multivariate Outcome Dependent Sampling Design
指導教授: 呂翠珊
Lu, Tsui-Shan
學位類別: 碩士
Master
系所名稱: 數學系
Department of Mathematics
論文出版年: 2020
畢業學年度: 108
語文別: 中文
論文頁數: 63
中文關鍵詞: 結果依賴採樣設計多變量最佳化
英文關鍵詞: outcome-dependent sampling design, multivariate, optimal
DOI URL: http://doi.org/10.6345/NTNU202001273
論文種類: 學術論文
相關次數: 點閱:136下載:25
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  • 結果依賴採樣設計(Outcome-dependent sampling, ODS) 在很多流行病學或大型資料庫的研究中已經被證明是具有成本效益的抽樣方式且廣為採用,而多維度依賴採樣設計(multivariate outcome-dependent sampling design, MODS) 則是將ODS 延伸到群聚或長期追蹤資料,尤其在一位實驗對象有多於兩個觀測值時,存在著無法忽略的相關性。過去的文獻中,模擬設定的取樣大多來自母體樣本數很大,較少討論到若母體資料稀少的情況該如何抽樣,因此我們想更進一步討論此設計在這樣的情況是否能有效的估計。本研究的目標是針對在小樣本的情況下,我們進行大量的模擬,討論此設計在不同參數設定下目標參數的表現以及在有限的母體下,找出最佳配置的選取。最後,我們也將用此模型分析來自Busselton Health Survey 的實際資料。

    In most epidemiological or large database studies, the outcome-dependent sampling(ODS) design has been shown to enhance study efficiency and reduce the cost. The multivariate ODS (MODS) design is a further generalization for clustered or longitudinal data sampled under the ODS design. When the case is that one has at least two responses or there is more than one observation in the same cluster, the correlation between the responses can not be ignored. In the previous studies, most random samples were selected from large underlying cohorts. Therefore, we aim to consider relatively smaller underlying populations and see if the efficiency of the estimators still holds. Through conducting extensive simulation studies, we discuss the optimal allocation and design of the MODS sample under various settings. We also apply our proposed approach to
    analyze a real data set from the Busselton Health Survey Study.

    第一章 緒論 1 第二章 多元依賴採樣設計模型 3 第一節 MODS 的資料結構與概似函數 3 第二節 最大半參經驗概似估計 5 第三章 使用連續型分配對多元結果依賴採樣設計的模擬結果 7 第一節 介紹 7 第二節 資料生成 7 第三節 模擬結果 9 第四章 實徵資料 58 第一節 介紹資料來源 58 第二節 條件模型 58 第三節 分析結果 59 第五章 結論與討論 61 參考文獻 62

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