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st: psmatch2


From   Edwin Leuven <e.leuven@uva.nl>
To   statalist@hsphsun2.harvard.edu
Subject   st: psmatch2
Date   Tue, 22 Apr 2003 10:01:41 +0200

Thanks to Kit Baum, -psmatch2- is available from ssc.

Main features are faster 1-to-1 matching, full mahalanobis matching and saving 
of the overall weight of the matches.

For those interested more stuff is listed below.

Enjoy, Ed.


* general
  - allows multiple outcome variables
  - generates weights for all matching methods
  - more sophisticated common support trimming
  - pstest and psgraph utilities, to test covariate balancing 
    and common support
  - apart from the average treatment effect on the treated, it optionally
    calculates the average treatment effect on the untreated, and 
    the average treatment effect

* nearest neighbor
  - faster
  - allows matching with and without replacement

* mahalanobis
  - full mahalanobis (f.e. psmatch allows max 3 vars)

* kernel & llr
  - can match both on propensity score and mahalanobis metric

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



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