[The propensity score method and it's application].

Propensity score method, as an analytical strategy for adjusting multiple covariates, has been widely used in observational comparative effectiveness research. This paper introduces this method covered basic principles, case illustration and software implementation, in order to help readers understand propensity score method, apply it correctly in their researches, improve the efficiency of data utilization, and enhance the level of statistical analysis.倾向性评分作为一种对多个协变量进行调整的分析策略，在观察性疗效比较研究中的应用越来越广泛。本文从基本原理、案例分析、软件实现等方面对该方法进行详细介绍，以期读者对倾向性评分方法有所了解，在科研工作中能正确应用，提高数据使用效率和统计分析水平。.