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| Ước lượng Khớp Nối Đa Kỳ× | Phương pháp Sai phân kép (Difference-in-Differences - DiD)× | |
|---|---|---|
| Lĩnh vực≠ | Suy luận nhân quả | Kinh tế lượng |
| Họ | Regression model | Regression model |
| Năm ra đời≠ | 2005 | 1994 |
| Người khởi xướng≠ | Abadie (2005); Imbens & Wooldridge (2009) | Card & Krueger (canonical 1994 application); Angrist & Pischke (textbook treatment) |
| Loại≠ | Quasi-experimental / causal inference | Causal inference / panel regression |
| Công trình gốc≠ | Abadie, A. (2005). Semiparametric Difference-in-Differences Estimators. Review of Economic Studies, 72(1), 1-19. DOI ↗ | Angrist, J. D., & Pischke, J.-S. (2009). Mostly Harmless Econometrics: An Empiricist's Companion. Princeton University Press. ISBN: 978-0691120355 |
| Tên gọi khác≠ | panel matching estimator, longitudinal matching, multi-wave matching, repeated-cross-section matching | diff-in-diff, DiD, Farkların Farkı (Diff-in-Diff) |
| Liên quan≠ | 6 | 5 |
| Tóm tắt≠ | The multi-period matching estimator extends the standard matching framework to settings with multiple time periods, pairing each treated unit to similar untreated units based on pre-treatment covariates or propensity scores, then using within-pair before-after differences to estimate the average treatment effect on the treated (ATT). Leveraging repeated observations, it simultaneously controls for observed confounders and time-invariant unobserved heterogeneity. | Difference-in-Differences is a causal-inference method that estimates the effect of an intervention by comparing how a treatment group and a control group change over time. Made famous by Card and Krueger's 1994 minimum-wage study and developed in Angrist and Pischke's Mostly Harmless Econometrics, it isolates the treatment effect as the difference between the two groups' before-after changes. |
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