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arXiv 2101.06237stat.ME
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相依信息整群抽样下的完全Bayes估计

Fully Bayesian Estimation under Dependent and Informative Cluster Sampling

Luis G. Leon-Novelo, Terrance D. Savitsky

摘要:

调查数据通常是在多级抽样设计下收集的,其中单元被分箱到在第一阶段抽样的聚类中。感兴趣的单位索引总体变量通常在聚类内是相关的。我们提出了一个完全贝叶斯方法,构建一个确切的可能性,观察到的样本,将单位水平的边际抽样权重进行无偏推断的人口参数,同时占抽样集群的单位,以产生正确的不确定性量化引起的依赖。我们的方法参数化集群索引的随机效应在边际模型的响应和发布的,单位级抽样权重的条件模型。我们比较我们的方法插件贝叶斯和频率论的替代品在模拟研究中,并证明我们的方法最接近实现正确的模型参数的不确定性量化,包括集群索引的随机效应产生的方差。我们证明了我们的方法在NHANES数据的应用程序。

英文摘要:

Survey data are often collected under multistage sampling designs where units are binned to clusters that are sampled in a first stage. The unit-indexed population variables of interest are typically dependent within cluster. We propose a Fully Bayesian method that constructs an exact likelihood for the observed sample to incorporate unit-level marginal sampling weights for performing unbiased inference for population parameters while simultaneously accounting for the dependence induced by sampling clusters of units to produce correct uncertainty quantification. Our approach parameterizes cluster-indexed random effects in both a marginal model for the response and a conditional model for published, unit-level sampling weights. We compare our method to plug-in Bayesian and frequentist alternatives in a simulation study and demonstrate that our method most closely achieves correct uncertainty quantification for model parameters, including the generating variances for cluster-indexed random effects. We demonstrate our method in an application with NHANES data.

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