পদ্ধতির তুলনা করুন

	প্যানেল ডেটা ডিফারেন্স-ইন-ডিফারেন্সেস (প্যানেল DiD / TWFE)	সিন্থেটিক কন্ট্রোল মেথড (SCM)
ক্ষেত্র	কার্যকারণ অনুমান	কার্যকারণ অনুমান
পরিবার	Regression model	Regression model
উদ্ভবের বছর	1985–2004	2003–2010
প্রবর্তক	Ashenfelter & Card (1985); codified by Angrist & Pischke (2009); serial correlation critique by Bertrand, Duflo & Mullainathan (2004)	Alberto Abadie & Javier Gardeazabal (2003); Abadie, Diamond & Hainmueller (2010)
ধরন	Causal inference / panel regression	Quasi-experimental causal inference
মৌলিক উৎস	Angrist, J. D., & Pischke, J.-S. (2009). Mostly Harmless Econometrics: An Empiricist's Companion. Princeton University Press. ISBN: 978-0691120355	Abadie, A., Diamond, A., & Hainmueller, J. (2010). Synthetic Control Methods for Comparative Case Studies: Estimating the Effect of California's Tobacco Control Program. Journal of the American Statistical Association, 105(490), 493-505.
অপর নাম	Two-Way Fixed Effects DiD, TWFE, Panel DiD, Panel Diff-in-Diff	SCM, synthetic control, synth estimator, Abadie-Diamond-Hainmueller method
সম্পর্কিত	4	4
সারসংক্ষেপ	Panel Data Difference-in-Differences extends the classic two-period DiD design to settings with multiple units observed across many time periods. By absorbing unit-level fixed effects and time fixed effects simultaneously, it isolates the causal effect of a treatment or policy change while controlling for both time-invariant unit heterogeneity and common time shocks affecting all units.	The Synthetic Control Method estimates the causal effect of a treatment or policy on a single treated unit by constructing a weighted combination of untreated units — the synthetic control — that closely resembles the treated unit before the intervention. The gap between the treated unit and its synthetic counterpart after the intervention is the estimated treatment effect.