sccic-package: sccic: Synthetic Control Changes-in-Changes Estimator

In sccic: Synthetic Control Changes-in-Changes Estimator

sccic: Synthetic Control Changes-in-Changes Estimator

Description

Implements the Changes-in-Changes (CIC) estimator of Athey and Imbens (2006) \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1111/j.1468-0262.2006.00668.x")} combined with synthetic control methods. Provides both the continuous CIC estimator (Theorem 3.1) and the discrete CIC estimator (Theorem 4.1) for integer-valued outcomes, with analytic and bootstrap inference. Also provides nonparametric estimation of the entire counterfactual distribution of outcomes for a treated group, allowing evaluation of average, quantile, and distributional treatment effects. Synthetic control weights are constructed via elastic net regularization to handle settings with many potential control units.

Implements the Changes-in-Changes (CIC) estimator of Athey and Imbens (2006) combined with synthetic control methods for causal inference in difference-in-differences settings.

Main functions

cic

Standard CIC estimator for two groups and two periods, with analytic and bootstrap inference.

sc_cic

Combined synthetic control + CIC estimator for settings with a single treated unit and multiple donor units.

Author(s)

Maintainer: Neil Hwang [e-mail]

See Also

Useful links:

• https://github.com/neilhwang/sccic

• Report bugs at https://github.com/neilhwang/sccic/issues

sccic documentation built on April 10, 2026, 5:07 p.m.