Reporting of Baseline Characteristics to Accompany Analysis by Instrumental Variables.
Reporting of Baseline Characteristics to Accompany Analysis by Instrumental Variables.
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报告基线特征以伴随工具变量分析。
DOI：
10.1097/ede.0000000000000914
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Bekelis,Kimon
中科院分区：
文献类型：
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作者：
MacKenzie,ToddA;O'Malley,AJames;Bekelis,Kimon
工具变量(IV)估计者的一个特点和批评是，他们估计了编译器中暴露的影响，即暴露受工具影响的个人。可以想象，曝光不受仪器影响的个人的曝光效果是不同的。出于这个原因，知道谁是编译器是很有用的。我们提出了报告平均值和其他统计数据的方法，并在编译器和非编译器之间进行比较，这些方法适用于仪器和曝光是及时固定和二分法的场景。这些方法在教学医院和非教学医院接受脑部或脊柱手术的患者的结果比较中得到了说明。
A property and criticism of instrumental variable (IV) estimators is that they estimate the exposure effect in the compliers, individuals whose exposure is influenced by the instrument. It is conceivable that the exposure effect is different in individuals whose exposure is not influenced by the instrument. For that reason, it is useful to know who the compliers are. We present methods for reporting averages and other statistics and comparing them between the compliers and noncompliers, which are applicable to scenarios in which the instrument and exposure are fixed in time and dichotomous. The methods are illustrated in a comparison of outcomes between teaching and nonteaching hospitals in patients undergoing brain or spinal surgery.