A SAS Package for Logistic Two-Phase Studies

A SAS Package for Logistic Two-Phase Studies
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用于物流两阶段研究的 SAS 软件包

DOI:
10.18637/jss.v057.i09
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发表时间:
2014
影响因子:
5.8
通讯作者:
K. Drescher
K. Drescher
中科院分区:
计算机科学2区
文献类型:
--
作者:
W. Schill;D. Enders;K. Drescher

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两阶段设计扩展了标准病例对照设计,并在实践中被证明是有用的。在两阶段设计中,对于大型研究,可获得二分结果和风险因素的部分或代理信息,而对协变量的精确或完整测量仅在分层子样本中获得。然而,由于缺乏合适的、易于使用的软件,两相设计的应用似乎受到了阻碍。本文介绍了sas-two - phase-package (sas宏的集合)来完成这一任务。sas- two-phase -package通过EM算法和在具有二分类结果和给定分层的两阶段设置中的剖面似然实现加权似然、伪似然和半参数最大似然估计。
Two-phase designs, in which for a large study a dichotomous outcome and partial or proxy information on risk factors is available, whereas precise or complete measurements on covariates have been obtained only in a stratified sub-sample, extend the standard case-control design and have been proven useful in practice. The application of two-phase designs, however, seems to be hampered by the lack of appropriate, easy-to-use software. This paper introduces sas-twophase-package, a collection of SAS-macros, to fulfill this task. sas-twophase-package implements weighted likelihood, pseudo likelihood and semi- parametric maximum likelihood estimation via the EM algorithm and via profile likelihood in two-phase settings with dichotomous outcome and a given stratification.
osDesign:用于分析、评估和设计两阶段和病例对照研究的 R 包。
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发表时间: 2011
影响因子: 5.8
作者:
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