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协变量含缺失数据的因果推断研究 被引量:2

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摘要 文章通过引入缺失指示变量,并对影响函数进行加权,给出协变量存在缺失情况下倾向评分的估计方法。类比Montes-Rojas(2009)推导平均处理效应估计量渐近方差公式的方法,导出协变量存在缺失情况下,平均处理效应及其渐近方差的估计。借助模拟研究验证了倾向评分及平均处理效应渐近方差估计的正确性,与传统方法相比,该方法得到的估计量的Bias和MSE都小于传统方法。
作者 韩锋
出处 《统计与决策》 CSSCI 北大核心 2014年第8期12-15,共4页 Statistics & Decision
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