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GFORMULA: Stata module to implement the g-computation formula for estimating causal effects in the presence of time-varying confounding or mediation

Author

Listed:
  • Rhian Daniel

    () (London School of Hygiene and Tropical Medicine)

Abstract

gformula is an implementation of the g-computation procedure, used to estimate the causal effect of time-varying exposure(s) (A) on an outcome (Y) in the presence of time-varying confounders (L) that are themselves also affected by the exposure(s). The procedure can also be used to address the related problem of estimating controlled direct effects and natural direct/indirect effects when the causal effect of the exposure(s) on an outcome is mediated by intermediate variables, and in particular when confounders of the mediator-outcome relationships are themselves affected by the exposure(s).

Suggested Citation

  • Rhian Daniel, 2010. "GFORMULA: Stata module to implement the g-computation formula for estimating causal effects in the presence of time-varying confounding or mediation," Statistical Software Components S457204, Boston College Department of Economics, revised 22 Jan 2013.
  • Handle: RePEc:boc:bocode:s457204 Note: This module should be installed from within Stata by typing "ssc install gformula". 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/g/gformula.ado
    File Function: program code
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    File URL: http://fmwww.bc.edu/repec/bocode/g/gformula.sthlp
    File Function: help file
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    File URL: http://fmwww.bc.edu/repec/bocode/c/ChkIn.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/d/detangle.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/f/formatline.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/g/gformula_.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/g/gformula_example.do
    File Function: sample program
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    File URL: http://fmwww.bc.edu/repec/bocode/m/mediation.dta
    File Function: sample data file
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    File URL: http://fmwww.bc.edu/repec/bocode/t/tvc1.dta
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    File URL: http://fmwww.bc.edu/repec/bocode/t/tvc2.dta
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    File URL: http://fmwww.bc.edu/repec/bocode/g/gformula_Daniel_DeStavola_Cousens.pdf
    File Function: documentation
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