IDEAS home Printed from https://ideas.repec.org/c/boc/bocode/s458041.html
 

QQCOMPARE: Stata module to evaluate balance after matching using quantile-quantile plots

Author

Listed:
  • Sunil Mitra Kumar

    (King's College London)

Programming Language

Stata

Abstract

qqcompare helps evaluate balance after propensity score or Mahalanobis matching by comparing covariate balance using quantile-quantile plots. This allows for comparing the entire distribution of covariates, and not just their means, and thereby choosing the best matching algorithm among different alternatives according to which algorithm is most effective in reducing imbalance. qqcompare reports the mean and maximum deviation in quantile-quantile plots from the 45 degree line of identical distribution post-matching, and the relative (percentage) reduction that results from matching, compared to the unmatched data. Higher relative reductions indicate better balance. If the drawgraph option is specified, qqcompare draws quantile-quantile plots for each covariate, before and after matching.

Suggested Citation

  • Sunil Mitra Kumar, 2015. "QQCOMPARE: Stata module to evaluate balance after matching using quantile-quantile plots," Statistical Software Components S458041, Boston College Department of Economics.
    • Handle: RePEc:boc:bocode:s458041
    Note: This module should be installed from within Stata by typing "ssc install qqcompare". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser.
    as

    Download full text from publisher

    File URL: http://fmwww.bc.edu/repec/bocode/q/qqcompare.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/q/qqcompare.sthlp
    File Function: help file
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:boc:bocode:s458041. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Christopher F Baum (email available below). General contact details of provider: https://edirc.repec.org/data/debocus.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.