পদ্ধতির তুলনা করুন

	ডাইনামিক প্যানেল ইভেন্ট স্টাডি	প্যানেল ইভেন্ট স্টাডি
ক্ষেত্র	কার্যকারণ অনুমান	কার্যকারণ অনুমান
পরিবার	Regression model	Regression model
উদ্ভবের বছর	2021	1990s–2020s (modern panel formulation)
প্রবর্তক	Sun & Abraham (2021); Callaway & Sant'Anna (2021)	Formalized by Freyaldenhoven, Hansen, Perez-Orive & Shapiro (2021); widely applied in finance (Fama et al. 1969) and policy evaluation
ধরন	Quasi-experimental / causal inference	Quasi-experimental / causal panel design
মৌলিক উৎস	Callaway, B., & Sant'Anna, P. H. C. (2021). Difference-in-Differences with multiple time periods. Journal of Econometrics, 225(2), 200-230.	Freyaldenhoven, S., Hansen, C., Perez-Orive, J., & Shapiro, J. M. (2021). Visualization, Identification, and Estimation in the Linear Panel Event-Study Design. NBER Working Paper 29170. National Bureau of Economic Research.
অপর নাম	dynamic event study, panel event-study regression, leads-and-lags event study, event-time panel design	event-study regression, dynamic DiD, relative-time regression, distributed-lag panel model
সম্পর্কিত	4	4
সারসংক্ষেপ	The dynamic panel event study is a quasi-experimental method that uses panel data to trace out how a treatment effect evolves over time — before and after a defining event — by estimating a flexible regression of leads and lags around the treatment date. It simultaneously tests for pre-existing parallel trends and maps the full dynamic profile of causal impact across multiple post-event periods.	A panel event study estimates the dynamic causal effect of a treatment or policy by regressing an outcome on a full set of relative-time indicators — one for each period before and after the event — while controlling for unit and time fixed effects. The resulting coefficient plot shows how the treated units diverged from untreated units at each point in calendar time relative to their treatment date, making both pre-treatment trend violations and post-treatment effect trajectories immediately visible.