| 胡纯严,胡良平.基于不同变量分层的因果中介效应分析[J].四川精神卫生杂志,2022,35(5):412-417.Hu Chunyan,Hu Liangping,Causal mediation effect analysis based on different variable stratification[J].SICHUAN MENTAL HEALTH,2022,35(5):412-417 |
| 基于不同变量分层的因果中介效应分析 |
| Causal mediation effect analysis based on different variable stratification |
| 投稿时间：2022-09-11 |
| DOI：10.11886/scjsws20220911003 |
| 中文关键词: 因果中介效应 分层分析 变量水平 评估 协变量 |
| 英文关键词:Causal mediation effect Stratified analysis Variable level Evaluation Covariate |
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| 中文摘要: |
| 本文目的是介绍因果中介效应分析中3类变量水平的设定方法以及采用SAS实现分层条件下的计算方法。3类变量水平的设定是指处理变量、中介变量和协变量水平的设定，还可以为两个变量设定特定的水平组合。本文通过一个实例，借助proc causualmed过程中的evaluate语句实现基于不同变量分层的因果中介效应分析，并对输出结果进行解释。 |
| 英文摘要: |
| The purpose of this paper was to introduce the setting method of the three types of variable levels in the causal mediation effect analysis and the implementing calculation method under the condition of stratification by using SAS. The setting of the three types of variable levels referred to the setting of the levels of treatment variable， the mediator variable and the covariate. Besides， a specific level combination could also be set for two variables. Through an example， with the help of the enveluate statement in proc causualmed procedure， this paper used an example to conduct the causal mediation effect based on different variable stratification， and gave the output results and explanations. |
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