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arXiv 1901.04795stat.ME
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一种同时调整混杂因素和联合诊断-结局错误分类的加权方法

A weighting method for simultaneous adjustment for confounding and joint exposure-outcome misclassifications

Bas B. L. Penning de Vries, Maarten van Smeden, Rolf H. H. Groenwold

摘要:

暴露和结果变量的联合错误分类可能导致因果关系确定-结果效应的流行病学研究中出现相当大的偏倚。在本文中,我们提出了一个新的极大似然估计的边际因果比值比,同时调整混杂和几种形式的联合误分类的暴露和结果变量。所提出的方法依赖于验证数据的建设的权重,占两个来源的偏见。加权估计量是Gravel和Platt(Statistics in Medicine,2018)提出的暴露误分类加权估计量的扩展,适用于再梗死数据。进行了模拟研究,研究其有限样本的性质,并将其与不考虑混杂或误分类的方法进行比较。新的估计显示出有利的大样本性能的模拟。需要进一步研究所提出的方法的敏感性,以及违反其假设的替代方案。在现有的R包中的一个新的R函数的估计的实施是方便的。

英文摘要:

Joint misclassification of exposure and outcome variables can lead to considerable bias in epidemiological studies of causal exposure-outcome effects. In this paper, we present a new maximum likelihood based estimator for the marginal causal odd-ratio that simultaneously adjusts for confounding and several forms of joint misclassification of the exposure and outcome variables. The proposed method relies on validation data for the construction of weights that account for both sources of bias. The weighting estimator, which is an extension of the exposure misclassification weighting estimator proposed by Gravel and Platt (Statistics in Medicine, 2018), is applied to reinfarction data. Simulation studies were carried out to study its finite sample properties and compare it with methods that do not account for confounding or misclassification. The new estimator showed favourable large sample properties in the simulations. Further research is needed to study the sensitivity of the proposed method and that of alternatives to violations of their assumptions. The implementation of the estimator is facilitated by a new R function in an existing R package.

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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