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TWOPM: Stata module to estimate two-part models

Author

Listed:
  • Federico Belotti

    () (University of Rome Tor Vergata)

  • Partha Deb

    () (Hunter College)

Abstract

twopm fits two-part models for mixed discrete-continuous outcomes. In the two-part model, a binary choice model is fit for the probability of observing a positive-versus-zero outcome. Then, conditional on a positive outcome, an appropriate regression model is fit for the positive outcome. The -twopm- command allows the user to leverage the capabilities of predict and margins to calculate predictions and marginal effects and their standard errors from the combined first- and second-part models.

Suggested Citation

  • Federico Belotti & Partha Deb, 2012. "TWOPM: Stata module to estimate two-part models," Statistical Software Components S457538, Boston College Department of Economics, revised 04 Nov 2015.
  • Handle: RePEc:boc:bocode:s457538
    Note: This module should be installed from within Stata by typing "ssc install twopm". Windows users should not attempt to download these files with a web browser. This routine was previously circulated under the name TPM.
    as

    Download full text from publisher

    File URL: http://fmwww.bc.edu/repec/bocode/t/twopm.ado
    File Function: program code
    Download Restriction: no

    File URL: http://fmwww.bc.edu/repec/bocode/t/twopm.sthlp
    File Function: help file
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    File URL: http://fmwww.bc.edu/repec/bocode/t/twopm_postestimation.sthlp
    File Function: help file
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    File URL: http://fmwww.bc.edu/repec/bocode/t/twopm_p.ado
    File Function: program code
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    File URL: http://fmwww.bc.edu/repec/bocode/t/twopm_svy_check.ado
    File Function: program code
    Download Restriction: no

    File URL: http://fmwww.bc.edu/repec/bocode/_/_svy_twopm_display.ado
    File Function: program code
    Download Restriction: no

    File URL: http://fmwww.bc.edu/repec/bocode/_/_prefix_display.ado
    File Function: program code
    Download Restriction: no

    File URL: http://fmwww.bc.edu/repec/bocode/t/twopm_SJ_examples.do
    File Function: sample do-file
    Download Restriction: no

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