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DIDPLACEBO: Stata module for in-time, in-space and mixed placebo tests for estimating difference-in-differences (DID) models

Author

Listed:
  • Qiang Chen

    (Shandong University)

  • Ji Qi

    (Shandong University)

  • Guanpeng Yan

    (Shandong University of Finance and Economics)

Programming Language

Stata

Abstract

didplacebo implements placebo tests for estimating difference-in-differences (DID) models, where policy adoption may be synchronized or staggered. In particular, didplacebo performs in-time placebo tests using fake treatment times, in-space placebo tests using fake treatment units (randomly selected), and mixed placebo tests using both fake treatment units and times (both randomly selected). Moreover, didplacebo produces convenient graphs for visualization.

Suggested Citation

  • Qiang Chen & Ji Qi & Guanpeng Yan, 2023. "DIDPLACEBO: Stata module for in-time, in-space and mixed placebo tests for estimating difference-in-differences (DID) models," Statistical Software Components S459225, Boston College Department of Economics, revised 12 Sep 2023.
    • Handle: RePEc:boc:bocode:s459225
    Note: This module should be installed from within Stata by typing "ssc install didplacebo". 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/d/didplacebo.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/d/didplacebo.sthlp
    File Function: help file
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    File URL: http://fmwww.bc.edu/repec/bocode/t/tofirsttreat.ado
    File Function: program code
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    File URL: http://fmwww.bc.edu/repec/bocode/t/tofirsttreat.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/x/xtrantreat.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/x/xtrantreat.sthlp
    File Function: help file
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    File URL: http://fmwww.bc.edu/repec/bocode/x/xtshuffle.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/x/xtshuffle.sthlp
    File Function: help file
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    File URL: http://fmwww.bc.edu/repec/bocode/b/bbb.dta
    File Function: supplementary data file
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    File URL: http://fmwww.bc.edu/repec/bocode/c/cao_chen.dta
    File Function: supplementary data file
    Download Restriction: no
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