The GFORMULA macro implements the parametric g-formula in SAS to estimate the risk or the mean of an outcome under sustained treatment strategies specified by the user.
Authors: Roger W. Logan, Jessica G. Young, Sarah Taubman, Sara Lodi, Sally Picciotto, Goodarz Danaei, Miguel A. Hernán
Version 3.1 July 2021. This version includes options and improvements that are not compatible with previous versions of the software. For questions and comments, email rwlogan@hsph.harvard.edu or jessica_young@hphc.org