手法を比較

	構造的ブレーク・システムGMM	パネルシステムGMM（ブランドル・ボンド推定量）
分野	計量経済学	計量経済学
系統	Regression model	Regression model
提唱年	1998–2003	1998
提唱者	Blundell & Bond (System GMM); Bai & Perron (structural break framework)	Blundell & Bond (1998); Arellano & Bover (1995)
種類	Dynamic panel estimator with regime change	GMM estimator for dynamic panel data
原典	Blundell, R., & Bond, S. (1998). Initial conditions and moment restrictions in dynamic panel data models. Journal of Econometrics, 87(1), 115–143.	Blundell, R., & Bond, S. (1998). Initial conditions and moment restrictions in dynamic panel data models. Journal of Econometrics, 87(1), 115–143.
別名	System GMM with structural breaks, SB-SGMM, break-augmented System GMM, System GMM structural change estimator	System GMM, Blundell-Bond estimator, SYS-GMM, two-step System GMM
関連	6	6
概要	Structural Break System GMM extends the Blundell-Bond System GMM estimator for dynamic panel data by explicitly accounting for structural breaks — abrupt regime changes in slopes, intercepts, or dynamics — that, if ignored, bias the coefficient estimates and invalidate the moment conditions that underpin standard GMM inference.	Panel System GMM is a two-equation GMM estimator for dynamic panel data that stacks the differenced equation (using lagged levels as instruments) with the levels equation (using lagged differences as instruments). Developed by Blundell and Bond (1998) on the foundation of Arellano and Bover (1995), it is the preferred tool when the lagged dependent variable is highly persistent or individual effects are large.