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...7.1 version of R and found it is not possible to modify graphical parameters with par(). for example; > par(mfrow=c(2,2)) Error in c(2, 2) : unused argument(s) (2) > par$mfrow NULL Does any one know what is the cause of this problem? Regards, Fabio -- Fabio Sánchez, MD, MSc, PhD Unit of Dermatology and Venereology Department of Medicine Karolinska Institute SE-17176 Karolinska University Hospital Phone: +46 8 51772158 Fax: +46 8 51773620 [[alternative HTML version deleted]]

...control","control") I want to apply a test for every variable independently and store the summary result in a table for example mod1<-aov(a~group) mod2<-aov(b~group) . . . generate summary table Any suggestions? Thank you Fabio -- Fabio Sánchez, MD, MSc, PhD Unit of Dermatology and Venereology Department of Medicine Karolinska Institute SE-17176 Karolinska University Hospital Phone: +46 8 51772158 Fax: +46 8 51773620 [[alternative HTML version deleted]]

...ore the sequence of numbers resulting from multiplying the first and the second element in the vector, then the product of the 1st, 2nd and 3rd, then 1st,2nd,3rd and 4th and so forth until all the elements in the vector are multiplied. Many thanks, Fabio Fabio S?nchez, MD, MSc, PhD Molecular Dermatology Department of Medicine Karolinska Institute SE-17176 Karolinska University Hospital Tel: +46 8 51772158

...opriate to include several phenotypes (binary outcome variables in genetic analysis) in a logistic regression model that explores the effect of a few genotypes (factors)? If so, wouldn't there be an issue with multiple testing? Thanks for your opinions, -- Fabio Sánchez, MD, MSc, PhD Unit of Dermatology and Venereology Department of Medicine Karolinska Institute SE-17176 Karolinska University Hospital Tel: +46 8 51772158 Fax: +46 8 51773620 [[alternative HTML version deleted]]