SUBJECT: Multivariable fractional polynomials: update AUTHORS: Patrick Royston Imperial College School of Medicine, UK Gareth Ambler Imperial College School of Medicine, UK SUPPORT: proyston@rpms.ac.uk gambler@rpms.ac.uk INSTALLATION: Use standard installation instructions. HELP: From inside Stata, on-line help is available. Type . help mfracpol . help stmfracp