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HARMBY: Stata module to harmonize values of variables within by-groups

Author

Listed:
  • Roger Newson

    (National Heart and Lung Institute, Imperial College London)

Programming Language

Stata

Abstract

harmby ("harmonize within by-groups") checks that each variable in a varlist has no more than one value, other than the standard missing value, in each of the by-groups specified by by(), or in the whole data set, if by() is not specified. A standard missing value is . for a numeric variable, or the empty string "" for a string variable. If this condition is true, then harmby replaces all standard missing values in the by-group (or data set) by the one value that is not standard missing, if such a value exists, and takes no action if all values in a by-group (or data set) are standard missing. harmby is useful if there are variables whose values should be unique within each by-group (or within the data set), and new observations with standard missing values for these variables have been added to some or all of the by-groups by merge, or by ingap, which is downloadable from SSC.

Suggested Citation

  • Roger Newson, 2004. "HARMBY: Stata module to harmonize values of variables within by-groups," Statistical Software Components S419604, Boston College Department of Economics.
    • Handle: RePEc:boc:bocode:s419604
    Note: This module may be installed from within Stata by typing "ssc install harmby". 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

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    File URL: http://fmwww.bc.edu/repec/bocode/h/harmby.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/h/harmby.hlp
    File Function: help file
    Download Restriction: no
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    More about this item

    Keywords

    data manipulation; Stata;

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