เปรียบเทียบวิธี

	การออกแบบการศึกษาเหตุการณ์เชิงพื้นที่	ไดนามิก ดิฟ-อิน-ดิฟ (Dynamic Difference-in-Differences)
สาขาวิชา	การอนุมานเชิงสาเหตุ	การอนุมานเชิงสาเหตุ
ตระกูล	Regression model	Regression model
ปีกำเนิด	2000s–2010s	2021
ผู้ริเริ่ม	Developed across applied spatial economics literature; canonical applications in Autor, Dorn & Hanson (2013) and related regional economics studies	Callaway & Sant'Anna; Sun & Abraham
ประเภท	Quasi-experimental causal inference with spatial structure	Causal inference / quasi-experimental
แหล่งต้นตำรับ	Autor, D. H., Dorn, D., & Hanson, G. H. (2013). The China Syndrome: Local Labor Market Effects of Import Competition in the United States. American Economic Review, 103(6), 2121-2168.	Callaway, B., & Sant'Anna, P. H. C. (2021). Difference-in-differences with multiple time periods. Journal of Econometrics, 225(2), 200-230.
ชื่อเรียกอื่น	spatial event study, geographic event study, spatial dynamic DiD, place-based event study	Dynamic DiD, Staggered DiD, Event-time DiD, Heterogeneous-timing DiD
ที่เกี่ยวข้อง	5	4
สรุป	Spatial event study design estimates the dynamic causal effects of a geographically concentrated shock or policy by plotting how outcomes in affected locations evolve relative to unaffected locations across time periods, while explicitly accounting for spatial spillovers and autocorrelation across geographic units. It is widely used in regional and urban economics to evaluate place-based policies, trade shocks, and local labour market interventions.	Dynamic Difference-in-Differences extends the classic DiD framework to settings where units adopt treatment at different times. Rather than collapsing all variation into a single 2x2 comparison, it estimates group-time average treatment effects for each adoption cohort at each calendar period, then aggregates them into interpretable summaries of the causal effect over event time.