On Thu, 11 Dec 2003, Bill Shipley wrote: > To avoid angry replies, let me first say that I know that the use of > Type III sums of squares is controversial, and that some statisticians > recommend instead that significance be judged using the non-marginal > terms in the ANOVA. However, given that type III SS is also demanded by > some� is there a function (equivalent to drop1 for lm) to obtain type > III sums of squares for mixed models using the lme function?
I don't think you want SSq for a non-least-squares fit. Changes in AIC are computed by dropterm() in MASS for lme fits (and possibly also by drop1: I have not checked). -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
