The existing relevel() function in "stats" could conveniently be replaced with the Relevel() from the "Epi" package, which gives some added functionality: - Moving more than one level up first - Allowing to combine levels of factors This functionality is not something specific for epidemiology. The existing relevel is (almost literally) a subset of Relevel(). b.r. Bendix _________________________________________ Bendix Carstensen Senior Statistician Steno Diabetes Center A/S Niels Steensens Vej 2-4 DK-2820 Gentofte Denmark +45 44 43 87 38 (direct) +45 30 75 87 38 (mobile) bxc at steno.dk www.biostat.ku.dk/~bxc www.steno.dk