方法对比

	贝叶斯事件研究设计	贝叶斯双重差分法
领域	因果推断	因果推断
方法族	Regression model	Regression model
起源年份	1990s–2010s	2015-2023
提出者	Developed from classical event study methodology (Fama et al., 1969) with Bayesian extensions proposed through the 1990s–2010s	Li & Marchand (formal Bayesian DiD framework); Brodersen et al. (Bayesian causal inference in time series)
类型	Quasi-experimental / causal inference	Bayesian causal inference / panel regression
开创性文献	Sorescu, A., Warren, N. L., & Ertekin, L. (2017). Event study methodology in the marketing literature: An overview. Journal of the Academy of Marketing Science, 45(2), 186-207.	Li, F., & Marchand, J. (2023). Bayesian inference for difference-in-differences. Econometrics Journal, 26(3), 509-529.
别名	Bayesian event study, Bayesian abnormal return estimation, Bayesian pre-post event analysis, BES	Bayesian DiD, Bayes DiD, Bayesian diff-in-diff, Bayesian panel causal estimator
相关	5	5
摘要	Bayesian Event Study Design extends the classical event study framework by replacing frequentist significance testing with a full Bayesian inferential framework. It estimates how an event (policy change, announcement, shock) alters an outcome trajectory by learning a prior model from the estimation window and updating it with observed data, yielding posterior distributions over abnormal effects and cumulative causal impacts with full uncertainty quantification.	Bayesian Difference-in-Differences applies Bayesian statistical inference to the classic DiD design, replacing frequentist point estimates with full posterior distributions over the treatment effect. This yields not only an estimate of the causal effect but also a coherent probability statement about its magnitude and uncertainty, making it especially useful when sample sizes are modest or informative prior knowledge is available.