d STB-49 sg111. A modified likelihood ratio test command. d STB insert by d Santiago Perez-Hoyos, d Institut Valencia d'Estudis en Salut Publica, Valencia; d Aurelio Tobias, Statistical Consultant, Madrid. d Support: sperez@@san.gva.es and bledatobias@@ctv.es d After installation, see help ^lrtest2^. f sg111/birthwt.dta f sg111/lrtest2.ado f sg111/lrtest2.do f sg111/lrtest2.hlp