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arXiv 1802.09388stat.ME
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规划多层Bayes小区域估计的Bayes样本量确定

Bayesian Sample Size Determination for Planning Hierarchical Bayes Small Area Estimates

Peter Dutey-Magni

摘要:

本文设计了一种基于决策风险的分层模型小区域估计的完全贝叶斯样本量确定方法。围绕所需的最大后验方差目标指定的新损失函数实现了估计可靠性的传统官方统计标准(变异系数高达20%)。这种方法附带一种高效的二分搜索算法,可识别在此阈值约束下生成小面积估计所需的最小有效样本量。然后,可使用传统的调查抽样设计工具,利用由此产生的有效样本量目标,规划适当的数据收集。这种方法是说明在一个案例研究的小面积流行的生活限制健康问题的6个年龄组在英格兰北部的1,956个小地区,使用最近开发的集成嵌套拉普拉斯近似方法的空间广义线性混合层次模型。

英文摘要:

This paper devises a fully Bayesian sample size determination method for hierarchical model-based small area estimation with a decision risk approach. A new loss function specified around a desired maximum posterior variance target implements conventional official statistics criteria of estimator reliability (coefficient of variation of up to 20 per cent). This approach comes with an efficient binary search algorithm identifying the minimum effective sample size needed to produce small area estimates under this threshold constraint. Traditional survey sampling design tools can then be used to plan appropriate data collection using the resulting effective sample size target. This approach is illustrated in a case study on small area prevalence of life limiting health problems for 6 age groups across 1,956 small areas in Northern England, using the recently developed Integrated Nested Laplace Approximation method for spatial generalised linear mixed hierarchical models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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