IDEAS home Printed from

SWPERMUTE: Stata module to compute Permutation tests for Stepped-Wedge Cluster-Randomised Trials


  • Jennifer Thompson

    () (London School of Hygiene and Tropical Medicine)


Permutation tests are useful in stepped-wedge trials to provide robust statistical tests of intervention-effect estimates. However, the Stata command permute does not produce valid tests in this setting because individual observations are not exchangeable. We introduce the swpermute command that permutes clusters to sequences to maintain exchangeability. The command provides additional functionality to aid users in performing analyses of stepped-wedge trials. In particular, we include the option “withinperiod" that performs the specified analysis separately in each period of the study and the resulting period-specific intervention-effect estimates are combined as a weighted average.

Suggested Citation

  • Jennifer Thompson, 2017. "SWPERMUTE: Stata module to compute Permutation tests for Stepped-Wedge Cluster-Randomised Trials," Statistical Software Components S458426, Boston College Department of Economics, revised 29 Jun 2019.
  • Handle: RePEc:boc:bocode:s458426
    Note: This module should be installed from within Stata by typing "ssc install swpermute". The module is made available under terms of the GPL v3 ( Windows users should not attempt to download these files with a web browser.

    Download full text from publisher

    File URL:
    File Function: program code
    Download Restriction: no

    File URL:
    File Function: program code
    Download Restriction: no

    File URL:
    File Function: help file
    Download Restriction: no

    File URL:
    File Function: sample data file
    Download Restriction: no


    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:s458426. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Christopher F Baum). General contact details of provider: .

    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 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.

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

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.