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A General Statistical Framework for Multistage Designs

机译:多阶段设计的通用统计框架

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The efficiency of observational studies may be increased by applying multistage sampling designs. It is, however, not always transparent how to construct such a design to obtain increased efficiency. We here present a general statistical framework for describing and constructing multistage designs. We also provide tools for efficiency and cost-efficiency comparisons, to facilitate the choice of sampling scheme. The comparisons are based on Fisher information matrices and the results are presented in graphs, where either efficiency or cost-adjusted efficiency is plotted against a normalized measure of cost. The former curve resides in the unit square and is analogous to the receiver operating characteristic curve used for testing.
机译:通过应用多阶段抽样设计,可以提高观察研究的效率。然而,如何构造这样的设计以获得提高的效率并不总是透明的。我们在这里提出了一个用于描述和构建多阶段设计的通用统计框架。我们还提供了用于效率和成本效率比较的工具,以方便选择抽样方案。比较是基于Fisher信息矩阵的,结果显示在图表中,其中效率或成本调整后的效率相对于标准化的成本度量进行了绘制。前一条曲线位于单位平方中,类似于用于测试的接收器工作特性曲线。

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