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多种倾向评分方法的SAS软件实现与比较

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摘要 倾向评分(propensity score, PS)由Rosenbaum和Rubin于1983年提出,是一种对观察性研究、非随机化干预性研究或随机化失败的研究中混杂因素进行校正的方法,广泛应用于经济学、医学等领域。本文主要介绍三种倾向评分分析方法的SAS 9.4软件实现,分别是倾向评分匹配、分层和加权,这三种方法可有效均衡混杂因素的组间分布差异,从而减少混杂偏倚,获得干预效应的有效估计。
出处 《中国卫生统计》 CSCD 北大核心 2022年第3期465-469,473,共6页 Chinese Journal of Health Statistics
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