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PANELS: Stata module to count panels and apply a command to panel units


  • Ben Jann

    () (University of Bern)


panels provides a quick way to count the number of panels (groups) in a dataset and display some basic information about the sizes of the panels. Furthermore, -panels- can be used as a prefix command to other Stata commands to apply them to panel units instead of individual observations. This is useful, for example, if you want to compute frequency distributions or summary statistics for panel characteristics.

Suggested Citation

  • Ben Jann, 2009. "PANELS: Stata module to count panels and apply a command to panel units," Statistical Software Components S457086, Boston College Department of Economics, revised 01 Sep 2013.
  • Handle: RePEc:boc:bocode:s457086
    Note: This module should be installed from within Stata by typing "ssc install panels". Windows users should not attempt to download these files with a web browser.

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    panels; groups; data management;


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