Itemwise conditionally independent nonresponse modeling for incomplete multivariate data

Itemwise conditionally independent nonresponse modeling for incomplete multivariate data
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不完整多元数据的逐项条件独立无响应建模

DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
Jerome P. Reiter
Jerome P. Reiter
中科院分区:
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文献类型:
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作者:
Mauricio Sadinle;Jerome P. Reiter

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我们引入了一个多变量缺失数据的无响应机制,其中每个研究变量及其无响应指标是条件独立的,其余变量及其无响应指标。这是一种不可否认的缺失机制,因为任何项目的无响应都可能依赖于其他项目本身缺失的值。我们表明,在这种逐项条件独立无响应假设下,可以定义和识别研究变量及其缺失指标的联合多变量模型的非参数饱和类。我们还展示了如何执行敏感性分析,违反条件独立性假设编码的缺失机制。在整个过程中,我们用数据分析来说明这种建模方法的使用。
We introduce a nonresponse mechanism for multivariate missing data in which each study variable and its nonresponse indicator are conditionally independent given the remaining variables and their nonresponse indicators. This is a nonignorable missingness mechanism, in that nonresponse for any item can depend on values of other items that are themselves missing. We show that, under this itemwise conditionally independent nonresponse assumption, one can define and identify nonparametric saturated classes of joint multivariate models for the study variables and their missingness indicators. We also show how to perform sensitivity analysis to violations of the conditional independence assumptions encoded by this missingness mechanism. Throughout, we illustrate the use of this modeling approach with data analyses.
用于分析非单调可忽略缺失数据的无响应模型。
DOI: 10.1002/(sici)1097-0258(19970115)16:1
发表时间: 1997
影响因子: 2
作者:
Robins,JM;Gill,RD
通讯作者: Gill,RD
用于分析非单调不可忽略缺失数据的非响应模型。
DOI: 10.1002/(sici)1097-0258(19970115)16:1
发表时间: 1997
影响因子: 2
作者:
Robins,JM
通讯作者: Robins,JM