手法を比較

	異質的治療効果粗化厳密マッチング	粗化完全マッチング（CEM）
分野	因果推論	因果推論
系統	Regression model	Regression model
提唱年	2012-2013	2011-2012
提唱者	Iacus, King & Porro (CEM foundation, 2012); subgroup HTE extensions by Imai & colleagues	Iacus, King, & Porro
種類	Matching-based causal inference with subgroup CATE estimation	Matching / causal inference
原典	Iacus, S. M., King, G., & Porro, G. (2012). Causal Inference without Balance Checking: Coarsened Exact Matching. Political Analysis, 20(1), 1-24.	Iacus, S. M., King, G., & Porro, G. (2012). Causal Inference without Balance Checking: Coarsened Exact Matching. Political Analysis, 20(1), 1-24.
別名	HTE-CEM, CEM with CATE estimation, subgroup CEM, coarsened exact matching with effect heterogeneity	CEM, coarsened matching, monotonic imbalance bounding matching
関連	5	6
概要	Heterogeneous treatment effect coarsened exact matching (HTE-CEM) extends the coarsened exact matching framework to estimate how treatment effects vary across subgroups or individual characteristics. After CEM creates balanced strata by coarsening continuous covariates into bins and exactly matching units within each bin, conditional average treatment effects (CATEs) are computed within or across these strata, revealing where treatment works, for whom, and by how much.	Coarsened Exact Matching is a preprocessing method that achieves covariate balance by temporarily coarsening continuous variables into bins, exactly matching treated and control units within those bins, and then discarding all unmatched units. Introduced by Iacus, King, and Porro (2011, 2012), it bounds imbalance on each covariate independently, yielding a matched sample on which any estimator can be applied without relying on a propensity score model.