SUBJECT: Geometric means and confidence intervals AUTHORS: John Carlin Royal Children's Hospital and University of Melbourne Melbourne, Australia Suzanna Vidmar Royal Children's Hospital and University of Melbourne Melbourne, Australia Carlos Ramalheira Coimbra University Hospital Coimbra, Portugal SUPPORT: carlin@cryptic.rch.unimelb.edu.au vidmars@cryptic.rch.unimelb.edu.au cramal@cygnus.ci.uc.pt INSTALLATION: Use standard in1 installation instructions. HELP: From inside Stata, on-line help is available. Type . help gmci