d STB-42 sbe21. Adjusted pop. attrib. fractions from logistic regression. d STB insert by Anthony R. Brady, d Public Health Laboratory Service Statistics Unit, UK. d Support: tbrady@@phls.co.uk d After installation, see help ^aflogit^. f sbe21/aflogit.ado f sbe21/aflogit.hlp f sbe21/tuyns.dta