PROPENSITY MATCHING PROGRAMS

Support Page for:

Using Propensity Scores with Quasi-Experimental Designs

By

William M. Holmes

The following sites contain programs for doing propensity score matching.  Some programs also do Mahalanobis distance matching, with or without matching by fixed characteristics. For programs other than matching when using propensity scores, see http://www.sage/holmes/ or http://www.faculty.umb.edu/william_holmes/propensity.htm . The entries below list the URL for the program, the author’s name(s), and the type of matching done.

ONE-ONE MATCHING

SPSS

• http://www.unc.edu/~painter/SPSSsyntax/propen.txt, (Painter)

STATA

• psmatch2 http://ideas.repec.org/c/boc/bocode/s432001.html (Leuvan & Sianesi-various)
• match http://www.economics.harvard.edu/faculty/imbens/software_imbens (Abadie, Drukker, Herr, & Imbens—various)
• cem http://gking.harvard.edu/cem/ (Iacus, King, Porro—Coarsened exact matching)

SAS

• gmatch: http://mayoresearch.mayo.edu/mayo/research/biostat/upload/gmatch.sas (Kosanke & Bergstralh,--greedy nearest neighbor)
• match: http://www2.sas.com/proceedings/sugi25/25/po/25p225.pdf (Parsons--greedy nearest neighbor)
• www.lexjansen.com/pharmasug/2006/publichealthresearch/pr05.pdf (Feng, Jun, Xuo--Mahalanobis and propensity caliper matching)

R

• MatchIt http://gking.harvard.edu/matchit (Imai, King, Stuart--various)
• Matching http://sekhon.berkeley.edu/matching (Sekhon--various)
• cem http://gking.harvard.edu/cem/ (King—coarsened exact matching)

ONE-MANY MATCHING

SPSS

• (none currently available)

STATA

• psmatch2 http://ideas.repec.org/c/boc/bocode/s432001.html (Leuvan & Sianesi-various)
• match http://www.economics.harvard.edu/faculty/imbens/software_imbens (Abadie, Drukker, Herr, & Imbens—various)
• cem http://gking.harvard.edu/cem/ (Iacus, King, Porro—Coarsened exact matching)

SAS

• gmatch: http://mayoresearch.mayo.edu/mayo/research/biostat/upload/gmatch.sas (Kosanke & Bergstralh,--greedy matching)

• www.lexjansen.com/pharmasug/2006/publichealthresearch/pr05.pdf (Feng, Jun, Xuo--Mahalanobis and propensity caliper matching)

R

• MatchIt http://gking.harvard.edu/matchit (Imai, King, Stuart--various)
• optmatch http://cran.r-project.org/web/packages/optmatch/index.html (Hansen & Fredrickson--full, optimal, and variable ratio matching)

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Revised: 1/31/2013