d STB-50 sg112_1. Nonlin. reg. models with power or exp. func. of covar. d STB insert by d Patrick Royston, Imperial College School of Medicine, UK; d Gareth Ambler, Imperial College School of Medicine, UK. d Support: proyston@@rpms.ac.uk and gambler@@rpms.ac.uk d After installation, see help ^boxtid^, help ^fracpoly^, and help ^fracpred^. f sg112_1/boxtid.ado f sg112_1/boxtid.hlp f sg112_1/brcancer.dta f sg112_1/femur.dta f sg112_1/frac_ext.ado