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复杂抽样下的截取回归模型在医学研究中的应用 被引量:2

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摘要 目的探讨复杂抽样下截取因变量回归模型的方差估计及在医学研究中的应用。方法模拟复杂抽样下分别从左右方向发生因变量截取的回归数据,比较不同截取比例、不同组内相关时不考虑抽样特点和考虑抽样设计后的泰勒级数法、刀切法、平衡半样本法所得到回归系数及其标准误,并给出一个医学随访实例。结果随截取比例的增加回归系数偏性增加且其标准误变大,考虑抽样特征时回归系数标准误减小,群内个体相关越小回归系数标准误也减小。结论对于抽样框完整的复杂抽样截取数据进行回归分析时,运用复杂抽样数据方差估计可提高统计推断效率。
出处 《中国卫生统计》 CSCD 北大核心 2012年第5期691-694,697,共5页 Chinese Journal of Health Statistics
基金 国家自然科学基金(81072385) 全国统计科研计划重点项目(2009LZ033)
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共引文献66

同被引文献32

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