A note on the power prior

A note on the power prior
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DOI:
10.1002/sim.3722
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发表时间:
2009-12-10
影响因子:
2
通讯作者:
Spiegelhalter, David J.
Spiegelhalter, David J.
中科院分区:
医学3区
文献类型:
--
作者:
Neuenschwander, Beat;Branson, Michael;Spiegelhalter, David J.

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易卜拉欣和陈(中央集权主义者)的权力。Sci. 2000; 15:46-60)是将历史数据并入临床试验分析中的几种方法之一。把握度先验将历史数据的似然性提高到把握度参数a(0),该参数量化了由于试验之间的异质性而导致的历史数据的折扣。结果表明,从历史和当前数据估计功率参数的标准方法是不合适的,因此,我们建议使用修改后的功率先验方法或考虑替代方法。版权所有(C)2009约翰威利父子有限公司
The power prior by Ibrahim and Chen (Statist. Sci. 2000; 15:46-60) is one of several methods to incorporate historical data in the analysis of a clinical trial. The power prior raises the likelihood of the historical data to the power parameter a(0) which quantifies the discounting of the historical data due to heterogeneity between trials. It is shown that the standard method of estimating the power parameter from the historical and current data is inappropriate, and we therefore suggest to use a modified power prior approach or to consider alternative methods instead. Copyright (C) 2009 John Wiley & Sons, Ltd.