GFORMULA: Stata module to implement the g-computation formula for estimating causal effects in the presence of time-varying confounding or mediation
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).
|Requires:||Stata version 11|
|Date of creation:||23 Nov 2010|
|Date of revision:||22 Jan 2013|
|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.|
|Contact details of provider:|| Postal: |
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|Order Information:||Web: http://repec.org/docs/ssc.php|
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