d STB-43 sg82. Fractional polynomials for st data. d STB insert by Patrick Royston, Imperial College School of Medicine, UK. d Support: proyston@@rpms.ac.uk d After installation, see help ^stfracp^. f sg82/stfracp.ado f sg82/stfracp.hlp f sg82/stmfracp.ado f sg82/stmfracp.hlp