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Synth  

Synthetic Control Group Method for Comparative Case Studies
View on CRAN: Click here


Download and install Synth package within the R console
Install from CRAN:
install.packages("Synth")

Install from Github:
library("remotes")
install_github("cran/Synth")

Install by package version:
library("remotes")
install_version("Synth", "1.1-9")



Attach the package and use:
library("Synth")
Maintained by
Jens Hainmueller
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2007-02-11
Latest Update: 2025-09-03
Description:
Implements the synthetic control group method for comparative case studies as described in Abadie and Gardeazabal (2003) and Abadie, Diamond, and Hainmueller (2010, 2011, 2014). The synthetic control method allows for effect estimation in settings where a single unit (a state, country, firm, etc.) is exposed to an event or intervention. It provides a data-driven procedure to construct synthetic control units based on a weighted combination of comparison units that approximates the characteristics of the unit that is exposed to the intervention. A combination of comparison units often provides a better comparison for the unit exposed to the intervention than any comparison unit alone.
How to cite:
Jens Hainmueller (2007). Synth: Synthetic Control Group Method for Comparative Case Studies. R package version 1.1-9, https://cran.r-project.org/web/packages/Synth. Accessed 04 Jun. 2026.
Previous versions and publish date:
0.1-2 (2007-02-11 13:04), 0.1-3 (2007-09-23 21:54), 0.1-4 (2007-10-18 09:33), 0.1-5 (2007-12-19 11:44), 0.1-6 (2008-09-11 22:29), 0.1-8 (2011-03-15 09:14), 0.1-9 (2011-04-27 14:53), 1.1-1 (2011-09-28 15:47), 1.1-2 (2011-12-27 11:06), 1.1-3 (2012-10-24 14:31), 1.1-4 (2013-08-12 17:50), 1.1-5 (2014-01-27 00:37), 1.1-6 (2022-06-09 01:30), 1.1-8 (2023-06-02 11:10), 1.1-9 (2025-10-19 07:10)
Other packages that cited Synth R package
View Synth citation profile
Other R packages that Synth depends, imports, suggests or enhances
Complete documentation for Synth
Functions, R codes and Examples using the Synth R package
Some associated functions: basque . collect.optimx . dataprep . fn.V . gaps.plot . path.plot . spec.pred.func . synth.data . synth . synth.tab . 
Some associated R codes: collect.optimx.R . dataprep.R . fn.V.R . gaps.plot.R . path.plot.R . spec.pred.func.R . synth.R . synth.tab.R . zzz.R .  Full Synth package functions and examples
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