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OBSDIFF: Stata module to identify differences in values across observations for a variable


  • Eric Booth

    () (Public Policy Research Institute, Texas A&M University)


obsdiff lists the differences among observations/records in a varlist. This program is particularly useful for data where observations are near duplicates and you need to identify the variables in a varlist that differ. In this way, obsdiff operates similar to duplicates list except it lists differences (not duplicates) among the observations/records specified.

Suggested Citation

  • Eric Booth, 2011. "OBSDIFF: Stata module to identify differences in values across observations for a variable," Statistical Software Components S457272, Boston College Department of Economics.
  • Handle: RePEc:boc:bocode:s457272
    Note: This module should be installed from within Stata by typing "ssc install obsdiff". The module is made available under terms of the GPL v3 ( Windows users should not attempt to download these files with a web browser.

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    duplicates; list; observations;


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