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本文介绍了倾向值分析的基本原理和分析过程,并使用该方法分析老年人的工作类型与认知能力之间的关系,通过减少相关混淆变量对工作类型干预效果的影响保证因果关系的可靠性。结果表明,经过倾向值匹配后不同工作类型的个体差异得到一定程度的消除,分层分析中不同工作类型对认知能力的平均影响不显著,但t检验下不同工作类型对认知能力的影响显著。
In this paper, we introduce the basic principle and analysis process of propensity analysis, and use this method to analyze the relationship between work type and cognitive ability in the elderly, and ensure the reliability of causal relationship by reducing the influence of related confounding variables on the effect of work type intervention . The results show that individual differences of different job types are eliminated to some extent after the matching of tendency values. The average effect of different job types on cognitive ability is not significant in stratification analysis. However, the influence of different job types on cognitive ability under t test Significant.