I have fitted a model using gee and would like to do some regression diagnostics. The model is quite simple, three predictors, gaussian errors, 29 clusters each with 3 observations and unstructured or autoregressive corstr give similar results. Does anyone have any pointers to what sort of diagnostics should be considered or some R code for this sort of thing? I didn't find anything in recent mail archives, but did see a few people using geese from geepack instead of gee. A look at the manual for geepack didn't give me any leads on diagnostics though. David Scott _________________________________________________________________ David Scott Department of Statistics, Tamaki Campus The University of Auckland, PB 92019 Auckland NEW ZEALAND Phone: +64 9 373 7599 ext 86830 Fax: +64 9 373 7000 Email: d.scott at auckland.ac.nz Graduate Officer, Department of Statistics Webmaster, New Zealand Statistical Association: http://www.stat.auckland.ac.nz/nzsa/